메뉴 건너뛰기




Volumn 22, Issue 2, 2015, Pages

Effects of the paraffin wax (PW) content on the thermal and permeation properties of the LDPE/PW composite films

Author keywords

LDPE; LDPE PW composite films; Paraffin wax; Permeability; Thermal properties

Indexed keywords

CONTACT ANGLE; CRYSTALLINITY; FREE ENERGY; GAS PERMEABLE MEMBRANES; LOW DENSITY POLYETHYLENES; MECHANICAL PERMEABILITY; PARAFFIN WAXES; PARAFFINS; PHASE SEPARATION; SURFACE PROPERTIES; SURFACE ROUGHNESS; THERMODYNAMIC PROPERTIES;

EID: 84922551659     PISSN: 10229760     EISSN: 15728935     Source Type: Journal    
DOI: 10.1007/s10965-014-0650-x     Document Type: Article
Times cited : (23)

References (48)
  • 1
    • 0032302287 scopus 로고    scopus 로고
    • Temperature-responsive permeability of porous PNIPAAm-g-PE membranes
    • COI: 1:CAS:528:DyaK1cXnsV2ktLs%3D
    • Peng T, Chen YL (1998) Temperature-responsive permeability of porous PNIPAAm-g-PE membranes. J Appl Polym Sci 70:2133–2142
    • (1998) J Appl Polym Sci , vol.70 , pp. 2133-2142
    • Peng, T.1    Chen, Y.L.2
  • 2
    • 84855482642 scopus 로고    scopus 로고
    • Temperature-sensitive composite membranes with “double switch” on water vapor permeability
    • Heung H, Mao ZP, Yu WD (2008) Temperature-sensitive composite membranes with “double switch” on water vapor permeability. J Fiber Bioeng Inf 1:233–238
    • (2008) J Fiber Bioeng Inf , vol.1 , pp. 233-238
    • Heung, H.1    Mao, Z.P.2    Yu, W.D.3
  • 3
    • 0032187615 scopus 로고    scopus 로고
    • Permeability properties of isometrically temperature-responsive poly(acrylic acid)-graft-oligo(N-isopropylacrylamide) gel membranes
    • COI: 1:CAS:528:DyaK1cXmsVGgsLs%3D
    • Kubota N, Matsubara T, Eguchi Y (1998) Permeability properties of isometrically temperature-responsive poly(acrylic acid)-graft-oligo(N-isopropylacrylamide) gel membranes. J Appl Polym Sci 70:1027–1034
    • (1998) J Appl Polym Sci , vol.70 , pp. 1027-1034
    • Kubota, N.1    Matsubara, T.2    Eguchi, Y.3
  • 6
    • 38649096923 scopus 로고    scopus 로고
    • Composite nano-structured calcium silicate phase change materials for thermal buffering in food packaging
    • Johnston JH, Grindrod JE, Dodds M, Schimitschek K (2008) Composite nano-structured calcium silicate phase change materials for thermal buffering in food packaging. Curr Appl Phys 8:508–511
    • (2008) Curr Appl Phys , vol.8 , pp. 508-511
    • Johnston, J.H.1    Grindrod, J.E.2    Dodds, M.3    Schimitschek, K.4
  • 7
    • 84888129609 scopus 로고    scopus 로고
    • Postharvest quality and shelf life of radish microgreens as impacted by storage temperature, packaging film, and chlorine wash treatment
    • COI: 1:CAS:528:DC%2BC3sXhs12ltLfK
    • Xiao Z, Luo Y, Lester GE, Kou L, Yang T, Wang Q (2014) Postharvest quality and shelf life of radish microgreens as impacted by storage temperature, packaging film, and chlorine wash treatment. LWT Food Sci Technol 55:551–558
    • (2014) LWT Food Sci Technol , vol.55 , pp. 551-558
    • Xiao, Z.1    Luo, Y.2    Lester, G.E.3    Kou, L.4    Yang, T.5    Wang, Q.6
  • 8
    • 77956500294 scopus 로고    scopus 로고
    • Effect of temperature and modified atmosphere packaging on storage quality of fresh-cut romaine lettuce
    • Manolopoulou H, Lambrinos GR, Chatzis E, Xanthopoulos G, Aravantinos E (2010) Effect of temperature and modified atmosphere packaging on storage quality of fresh-cut romaine lettuce. J Food Qual 33:317–336
    • (2010) J Food Qual , vol.33 , pp. 317-336
    • Manolopoulou, H.1    Lambrinos, G.R.2    Chatzis, E.3    Xanthopoulos, G.4    Aravantinos, E.5
  • 9
    • 77955923847 scopus 로고    scopus 로고
    • The use of PCM panels to improve storage condition of frozen food
    • Gin B, Farid MM (2010) The use of PCM panels to improve storage condition of frozen food. J Food Eng 100:372–376
    • (2010) J Food Eng , vol.100 , pp. 372-376
    • Gin, B.1    Farid, M.M.2
  • 10
    • 80053298256 scopus 로고    scopus 로고
    • Phase change material cellulosic composites for the cold storage of perishable products: from material preparation to computational evaluation
    • COI: 1:CAS:528:DC%2BC3MXht1Grtr%2FP
    • Melone L, Altomare L, Cigaba A, Nardo LD (2012) Phase change material cellulosic composites for the cold storage of perishable products: from material preparation to computational evaluation. Appl Energy 89:339–346
    • (2012) Appl Energy , vol.89 , pp. 339-346
    • Melone, L.1    Altomare, L.2    Cigaba, A.3    Nardo, L.D.4
  • 11
    • 72449185592 scopus 로고    scopus 로고
    • Blends of polyamide 12 and maleic anhydride grafted paraffin wax as potential phase change materials
    • COI: 1:CAS:528:DC%2BD1MXhs1Wnsb7P
    • Luyt AS, Krupa I, Assumption HJ, Ahmad EEM, Mofoken JP (2010) Blends of polyamide 12 and maleic anhydride grafted paraffin wax as potential phase change materials. Polym Test 29:100–106
    • (2010) Polym Test , vol.29 , pp. 100-106
    • Luyt, A.S.1    Krupa, I.2    Assumption, H.J.3    Ahmad, E.E.M.4    Mofoken, J.P.5
  • 12
    • 77249172609 scopus 로고    scopus 로고
    • Comparison of LDPE, LLDPE and HDPE as matrices for phase change materials based on a soft Fischer–Tropsch paraffin wax
    • COI: 1:CAS:528:DC%2BC3cXisV2rur4%3D
    • Molefi JA, Luyt AS, Krupa I (2010) Comparison of LDPE, LLDPE and HDPE as matrices for phase change materials based on a soft Fischer–Tropsch paraffin wax. Thermochim Acta 500:88–92
    • (2010) Thermochim Acta , vol.500 , pp. 88-92
    • Molefi, J.A.1    Luyt, A.S.2    Krupa, I.3
  • 13
    • 84884213671 scopus 로고    scopus 로고
    • 2 phase change composite for thermal energy storage
    • COI: 1:CAS:528:DC%2BC3sXhtFWmsLk%3D
    • 2 phase change composite for thermal energy storage. Sustain Chem Eng 1:374–380
    • (2013) Sustain Chem Eng , vol.1 , pp. 374-380
    • Li, B.1    Liu, T.2    Hu, L.3    Wang, Y.4    Gao, L.5
  • 14
    • 35449006258 scopus 로고    scopus 로고
    • Phase change materials based on low-density polyethylene/paraffin wax blends
    • COI: 1:CAS:528:DC%2BD2sXht1Oksb3M
    • Krupa I, Gikova G, Luyt AS (2007) Phase change materials based on low-density polyethylene/paraffin wax blends. Eur Polym J 43:4695–4705
    • (2007) Eur Polym J , vol.43 , pp. 4695-4705
    • Krupa, I.1    Gikova, G.2    Luyt, A.S.3
  • 15
    • 0035837520 scopus 로고    scopus 로고
    • Thermal properties of polypropylene/wax blends
    • COI: 1:CAS:528:DC%2BD3MXjtlaqsr8%3D
    • Krupa I, Luyt AS (2001) Thermal properties of polypropylene/wax blends. Thermochim Acta 372:137–141
    • (2001) Thermochim Acta , vol.372 , pp. 137-141
    • Krupa, I.1    Luyt, A.S.2
  • 16
    • 84877701508 scopus 로고    scopus 로고
    • Preparation and characterization of poly(propylene carbonate)/exfoliated graphite nanocomposite films with improved thermal stability, mechanical properties and barrier properties
    • COI: 1:CAS:528:DC%2BC3sXhtFOju7g%3D
    • Lee Y, Kim D, Seo J, Han H, Khan SB (2013) Preparation and characterization of poly(propylene carbonate)/exfoliated graphite nanocomposite films with improved thermal stability, mechanical properties and barrier properties. Polym Int 62:1386–1394
    • (2013) Polym Int , vol.62 , pp. 1386-1394
    • Lee, Y.1    Kim, D.2    Seo, J.3    Han, H.4    Khan, S.B.5
  • 17
    • 84872188528 scopus 로고    scopus 로고
    • UV-cured poly(urethane acrylate) composite films containing surface-modified tetrapod ZnO whiskers
    • COI: 1:CAS:528:DC%2BC3sXht1Glsrk%3D
    • Kim D, Jang M, Seo J, Nam K, Han H, Khan SB (2013) UV-cured poly(urethane acrylate) composite films containing surface-modified tetrapod ZnO whiskers. Compos Sci Technol 75:84–92
    • (2013) Compos Sci Technol , vol.75 , pp. 84-92
    • Kim, D.1    Jang, M.2    Seo, J.3    Nam, K.4    Han, H.5    Khan, S.B.6
  • 18
    • 84881553059 scopus 로고    scopus 로고
    • Effects of different compatibilizers on the rheological, thermomechanical, and morphological properties of HDPE/LLDPE blend-based nanocomposites
    • COI: 1:CAS:528:DC%2BC3sXntF2nt7k%3D
    • Passador FR, Ruvolo-Filho AC, Pessan LA (2013) Effects of different compatibilizers on the rheological, thermomechanical, and morphological properties of HDPE/LLDPE blend-based nanocomposites. J Appl Polym Sci 130:1726–1735
    • (2013) J Appl Polym Sci , vol.130 , pp. 1726-1735
    • Passador, F.R.1    Ruvolo-Filho, A.C.2    Pessan, L.A.3
  • 19
    • 84860548035 scopus 로고    scopus 로고
    • Polyurethanes as solid–solid phase change materials for thermal energy storage
    • COI: 1:CAS:528:DC%2BC38Xms1Sks7g%3D
    • Alkan C, Günther E, Hiebler S, Ensari ÖF, Kahraman D (2012) Polyurethanes as solid–solid phase change materials for thermal energy storage. Sol Energy 86:1761–1769
    • (2012) Sol Energy , vol.86 , pp. 1761-1769
    • Alkan, C.1    Günther, E.2    Hiebler, S.3    Ensari, Ö.F.4    Kahraman, D.5
  • 20
    • 0037190728 scopus 로고    scopus 로고
    • w and comonomer type on the miscibility of m-LLDPE and LDPE blends
    • COI: 1:CAS:528:DC%2BD38XotlWit78%3D
    • w and comonomer type on the miscibility of m-LLDPE and LDPE blends. Polymer 43:6911–6929
    • (2002) Polymer , vol.43 , pp. 6911-6929
    • Hameed, T.1    Hussein, I.A.2
  • 21
    • 45849137484 scopus 로고    scopus 로고
    • Surface properties of low density polyethylene upon low-temperature plasma treatment with various gases
    • COI: 1:CAS:528:DC%2BD1cXntVOgu74%3D
    • Ataeefard M, Moradian S, Mirabedini M, Ebrahimi M, Asiaban S (2008) Surface properties of low density polyethylene upon low-temperature plasma treatment with various gases. Plasma Chem Plasma Process 28:377–390
    • (2008) Plasma Chem Plasma Process , vol.28 , pp. 377-390
    • Ataeefard, M.1    Moradian, S.2    Mirabedini, M.3    Ebrahimi, M.4    Asiaban, S.5
  • 22
    • 78650272839 scopus 로고    scopus 로고
    • Surface properties of polypropylene/organoclay nanocomposites
    • COI: 1:CAS:528:DC%2BC3cXhsFOqur7L
    • Ataeefard M, Moradian S (2011) Surface properties of polypropylene/organoclay nanocomposites. Appl Surf Sci 257:2320–2326
    • (2011) Appl Surf Sci , vol.257 , pp. 2320-2326
    • Ataeefard, M.1    Moradian, S.2
  • 23
    • 0036883247 scopus 로고    scopus 로고
    • Surface modification of polyvinylidene fluoride pervaporation membranes
    • COI: 1:CAS:528:DC%2BD38XpslWksrk%3D
    • Khayet M, Chowdhury G, Matsuura T (2002) Surface modification of polyvinylidene fluoride pervaporation membranes. AIChE J 48:2833–2843
    • (2002) AIChE J , vol.48 , pp. 2833-2843
    • Khayet, M.1    Chowdhury, G.2    Matsuura, T.3
  • 24
    • 84863262647 scopus 로고    scopus 로고
    • A review of intercalation composite phase change material: preparation, structure and properties
    • COI: 1:CAS:528:DC%2BC38Xkt1Oktrk%3D
    • Li M, Wu Z (2012) A review of intercalation composite phase change material: preparation, structure and properties. Renew Sust Energ Rev 16:2094–2101
    • (2012) Renew Sust Energ Rev , vol.16 , pp. 2094-2101
    • Li, M.1    Wu, Z.2
  • 25
    • 84922687543 scopus 로고    scopus 로고
    • Preparation of polyurushiol (PUOH) using urushiol and property of LDPE / PUOH composite films
    • COI: 1:CAS:528:DC%2BC3sXitVCmur0%3D
    • Kim D, Kim I, Seo J, Seo J (2012) Preparation of polyurushiol (PUOH) using urushiol and property of LDPE / PUOH composite films. Appl Chem Eng 23:546–553
    • (2012) Appl Chem Eng , vol.23 , pp. 546-553
    • Kim, D.1    Kim, I.2    Seo, J.3    Seo, J.4
  • 26
    • 84861918770 scopus 로고    scopus 로고
    • Fabrication and performances of microencapsulated paraffin composites with polymethylmethacrylate shell based on ultraviolet irradiation-initiated
    • Wang Y, Shi H, Xia TD, Zhang T, Feng HX (2012) Fabrication and performances of microencapsulated paraffin composites with polymethylmethacrylate shell based on ultraviolet irradiation-initiated. Mater Chem Phys 135:181–187
    • (2012) Mater Chem Phys , vol.135 , pp. 181-187
    • Wang, Y.1    Shi, H.2    Xia, T.D.3    Zhang, T.4    Feng, H.X.5
  • 27
    • 84878923876 scopus 로고    scopus 로고
    • Enhanced moisture barrier films based on EVOH/Exfoliated graphite (EGn) nanocomposite films by solution blending
    • Kwon H, Kim D, Seo J, Han H (2013) Enhanced moisture barrier films based on EVOH/Exfoliated graphite (EGn) nanocomposite films by solution blending. Macromol Res 21:987–994
    • (2013) Macromol Res , vol.21 , pp. 987-994
    • Kwon, H.1    Kim, D.2    Seo, J.3    Han, H.4
  • 28
    • 84872018239 scopus 로고    scopus 로고
    • Development of flexible zein–wax composite and zein–fatty acid blend films for controlled release of lysozyme
    • Arcan I, Yemenocoglu A (2013) Development of flexible zein–wax composite and zein–fatty acid blend films for controlled release of lysozyme. Food Res Int 51:208–216
    • (2013) Food Res Int , vol.51 , pp. 208-216
    • Arcan, I.1    Yemenocoglu, A.2
  • 29
    • 79956100467 scopus 로고    scopus 로고
    • Synthesis, mechanical, and barrier properties of LDPE/graphene nanocomposites using vinyl triethoxysilane as a coupling agent
    • Wang J, Xu C, Hu H, Wan L, Chen R, Zheng H, Liu F, Zhang M, Shang X, Wang X (2011) Synthesis, mechanical, and barrier properties of LDPE/graphene nanocomposites using vinyl triethoxysilane as a coupling agent. J Nanoparticle Res 13:869–878
    • (2011) J Nanoparticle Res , vol.13 , pp. 869-878
    • Wang, J.1    Xu, C.2    Hu, H.3    Wan, L.4    Chen, R.5    Zheng, H.6    Liu, F.7    Zhang, M.8    Shang, X.9    Wang, X.10
  • 30
    • 84878812551 scopus 로고    scopus 로고
    • Bioinspired hierarchical superhydrophobic structures formed by n-paraffin waxes of varying chain lengths
    • Pechhook S, Pokroy B (2013) Bioinspired hierarchical superhydrophobic structures formed by n-paraffin waxes of varying chain lengths. Soft Matter 9:5710–5715
    • (2013) Soft Matter , vol.9 , pp. 5710-5715
    • Pechhook, S.1    Pokroy, B.2
  • 31
    • 70349210056 scopus 로고    scopus 로고
    • Thermal evaporation of multi-component waxes and thermally activated formation of nanotubules for superhydrophobic surfaces
    • Niemietz A, Wandelt K, Barthlott W, Koch K (2009) Thermal evaporation of multi-component waxes and thermally activated formation of nanotubules for superhydrophobic surfaces. Prog Org Coat 66:221–227
    • (2009) Prog Org Coat , vol.66 , pp. 221-227
    • Niemietz, A.1    Wandelt, K.2    Barthlott, W.3    Koch, K.4
  • 33
    • 4143053538 scopus 로고    scopus 로고
    • Morphology and thermal properties of inorganic–organic hybrids involving epoxy resin and polyhedral oligomeric silsesquioxane
    • Ni Y, Zheng S, Nie K (2004) Morphology and thermal properties of inorganic–organic hybrids involving epoxy resin and polyhedral oligomeric silsesquioxane. Polymer 45:5557–5568
    • (2004) Polymer , vol.45 , pp. 5557-5568
    • Ni, Y.1    Zheng, S.2    Nie, K.3
  • 34
    • 0037177703 scopus 로고    scopus 로고
    • Rheological and thermal properties of m-LLDPE blends with m-HDPE and LDPE
    • Liu C,Wang J, He J (2002) Rheological and thermal properties of m-LLDPE blends with m-HDPE and LDPE. Polymer 43:3811–3818
    • (2002) Polymer , vol.43 , pp. 3811-3818
  • 35
    • 84881093621 scopus 로고    scopus 로고
    • Accelerated thermal cycling test of microencapsulated paraffin wax/polyaniline made by simple preparation method for solar thermal energy storage
    • Silakhori M, Naghavi MS, Metselaar HSC, Mahlia TMI, Mehrali HFM (2013) Accelerated thermal cycling test of microencapsulated paraffin wax/polyaniline made by simple preparation method for solar thermal energy storage. Mater 6:1608–1620
    • (2013) Mater , vol.6 , pp. 1608-1620
    • Silakhori, M.1    Naghavi, M.S.2    Metselaar, H.S.C.3    Mahlia, T.M.I.4    Mehrali, H.F.M.5
  • 36
    • 77951850831 scopus 로고    scopus 로고
    • Preparation of phase-change material microcapsuleswith paraffin or camel fat cores: application to fabrics
    • Fallahi E, Barmar M, Kish MH (2010) Preparation of phase-change material microcapsuleswith paraffin or camel fat cores: application to fabrics. Iran Polym J 19:277–286
    • (2010) Iran Polym J , vol.19 , pp. 277-286
    • Fallahi, E.1    Barmar, M.2    Kish, M.H.3
  • 39
    • 0041528252 scopus 로고    scopus 로고
    • A review of polymer dissolution
    • COI: 1:CAS:528:DC%2BD3sXmsVCgtbs%3D
    • Miller-Chou BA, Koenig JL (2003) A review of polymer dissolution. Prog Polym Sci 28:1223–1270
    • (2003) Prog Polym Sci , vol.28 , pp. 1223-1270
    • Miller-Chou, B.A.1    Koenig, J.L.2
  • 40
    • 84892575688 scopus 로고    scopus 로고
    • Miscibility studies of paraffin/polyethylene blends as form-stable phase change materials
    • Chen F, Wolcott MP (2014) Miscibility studies of paraffin/polyethylene blends as form-stable phase change materials. Eur Polym J 52:44–52
    • (2014) Eur Polym J , vol.52 , pp. 44-52
    • Chen, F.1    Wolcott, M.P.2
  • 41
    • 0032308216 scopus 로고    scopus 로고
    • Rheological and mechanical properties in polyethylene blends
    • COI: 1:CAS:528:DyaK1MXnvFCntQ%3D%3D
    • Cho K, Lee BH, Hwang KM, Lee H, Choe S (1998) Rheological and mechanical properties in polyethylene blends. Polym Eng Sci 38:1969–1975
    • (1998) Polym Eng Sci , vol.38 , pp. 1969-1975
    • Cho, K.1    Lee, B.H.2    Hwang, K.M.3    Lee, H.4    Choe, S.5
  • 42
    • 37549070767 scopus 로고    scopus 로고
    • Thermal behaviour of low and high molecular weight paraffin waxes used for designing phase change materials
    • Krupa I, Luyt AS, Thermal behaviour of low and high molecular weight paraffin waxes used for designing phase change materials. Thermochim Acta 467:117–120
    • Thermochim Acta , vol.467 , pp. 117-120
    • Krupa, I.1    Luyt, A.S.2
  • 43
    • 37749018606 scopus 로고    scopus 로고
    • Correlations between composition and crystallinity of LDPE/HDPE blends
    • COI: 1:CAS:528:DC%2BD1cXhtlCksQ%3D%3D
    • Munaro M, Akcelrud L (2008) Correlations between composition and crystallinity of LDPE/HDPE blends. J Polym Res 15:83–88
    • (2008) J Polym Res , vol.15 , pp. 83-88
    • Munaro, M.1    Akcelrud, L.2
  • 44
    • 0033939812 scopus 로고    scopus 로고
    • Crystallization kinetics and thermal degradation behavior of low-density polyethylene blended with poly(bispropoxyphosphazene)
    • COI: 1:CAS:528:DC%2BD3cXntVKrsA%3D%3D
    • Chiu WY, Wang FT, Chen LW, Don TM, Lee CY (2000) Crystallization kinetics and thermal degradation behavior of low-density polyethylene blended with poly(bispropoxyphosphazene). Polym Degrad Stab 67:223–231
    • (2000) Polym Degrad Stab , vol.67 , pp. 223-231
    • Chiu, W.Y.1    Wang, F.T.2    Chen, L.W.3    Don, T.M.4    Lee, C.Y.5
  • 45
    • 0033354727 scopus 로고    scopus 로고
    • Crystal structure changes during isothermal crystallization, cooling and heating of linear polyethylene
    • COI: 1:CAS:528:DC%2BD3cXitVamu7s%3D
    • Wang JG, Hsiao BS, Lopez J, Armistead JP (1999) Crystal structure changes during isothermal crystallization, cooling and heating of linear polyethylene. J Polym Res 6:167–173
    • (1999) J Polym Res , vol.6 , pp. 167-173
    • Wang, J.G.1    Hsiao, B.S.2    Lopez, J.3    Armistead, J.P.4
  • 46
    • 33749675363 scopus 로고    scopus 로고
    • Glass transition behavior of clay aerogel/poly(vinyl alcohol) composites
    • Bandi S, Schirldi DA, Glass transition behavior of clay aerogel/poly(vinyl alcohol) composites. Macromolecules 39:6537–6545
    • Macromolecules , vol.39 , pp. 6537-6545
    • Bandi, S.1    Schirldi, D.A.2
  • 47
    • 79955475517 scopus 로고    scopus 로고
    • Water absorption and oxygen barrier characteristics of ethylene vinyl alcohol films
    • COI: 1:CAS:528:DC%2BC3MXlt1Cms74%3D
    • Mokwena KK, Tang J, Laborie MP (2011) Water absorption and oxygen barrier characteristics of ethylene vinyl alcohol films. J Food Eng 105:436–443
    • (2011) J Food Eng , vol.105 , pp. 436-443
    • Mokwena, K.K.1    Tang, J.2    Laborie, M.P.3
  • 48
    • 78649931456 scopus 로고    scopus 로고
    • Surface characteristics of low-density polyethylene films modified by oxyfluorination-assisted graft polymerization
    • COI: 1:CAS:528:DC%2BC3cXhsFCqsLvE
    • Jeong E, Bae TS, Yun SM, Woo SW, Lee YS (2011) Surface characteristics of low-density polyethylene films modified by oxyfluorination-assisted graft polymerization. Colloids Surf A 373:36–41
    • (2011) Colloids Surf A , vol.373 , pp. 36-41
    • Jeong, E.1    Bae, T.S.2    Yun, S.M.3    Woo, S.W.4    Lee, Y.S.5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.