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Volumn 132, Issue 6, 2010, Pages 1750-1751

Random copolymerization of ε-caprolactone with lactide using a homosalen-Al complex

Author keywords

[No Author keywords available]

Indexed keywords

ABUNDANCE RATIOS; AL COMPLEX; BULKY SUBSTITUENTS; CAPROLACTONE; CHEMICAL EQUATIONS; LACTIDES; RANDOM COPOLYMER; RANDOM COPOLYMERIZATION; REACTIVITY RATIO; SEQUENCE LENGTHS; SUBSTITUENT EFFECT;

EID: 77249109862     PISSN: 00027863     EISSN: 15205126     Source Type: Journal    
DOI: 10.1021/ja9089395     Document Type: Article
Times cited : (196)

References (50)
  • 3
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    • Polymers for Biomedical Applications
    • Mahapatro, A, Kulshrestha, A. S, Eds, American Chemical Society: Washington, DC
    • (c) Polymers for Biomedical Applications; Mahapatro, A., Kulshrestha, A. S., Eds.; ACS Symposium Series, Vol. 977; American Chemical Society: Washington, DC, 2007.
    • (2007) ACS Symposium Series , vol.977
  • 15
    • 77249136770 scopus 로고    scopus 로고
    • Ph.D. Dissertation, Nagoya Institute of Technology, Chapter 3
    • (g) Nishimura, Y. Ph.D. Dissertation, Nagoya Institute of Technology, 2004; Chapter 3.
    • (2004)
    • Nishimura, Y.1
  • 33
    • 77249113835 scopus 로고    scopus 로고
    • X-Y is the rate constant for the addition of monomer Y to the chain end of the monomer X moiety.
    • X-Y is the rate constant for the addition of monomer Y to the chain end of the monomer X moiety.
  • 34
    • 77249110388 scopus 로고    scopus 로고
    • Florcza and Duda recently reported another sophisticated approach using a chiral Al complex to adjust the reactivity of CL and L-lactide, but their chiral system is not applicable to the copolymerization using LA. See: Florcza, M, Duda, A. Angew. Chem, Int. Ed. 2008, 47, 9088. Comprehensive references for the copolymerization of CL with LA are listed therein
    • (a) Florcza and Duda recently reported another sophisticated approach using a chiral Al complex to adjust the reactivity of CL and L-lactide, but their chiral system is not applicable to the copolymerization using LA. See: Florcza, M.; Duda, A. Angew. Chem., Int. Ed. 2008, 47, 9088. Comprehensive references for the copolymerization of CL with LA are listed therein.
  • 35
    • 0031599166 scopus 로고    scopus 로고
    • Also see ref 4, b Duda, A, Biela, T, Libiszowski, J, Penczek, S, Dubois, P, Mecerreyes, D, Jérôme, R. Polym. Degrad. Stab. 1998, 59, 215
    • Also see ref 4. (b) Duda, A.; Biela, T.; Libiszowski, J.; Penczek, S.; Dubois, P.; Mecerreyes, D.; Jérôme, R. Polym. Degrad. Stab. 1998, 59, 215.
  • 36
    • 84890137702 scopus 로고    scopus 로고
    • LA = 2 for the copolymer does not indicate the randomness, as shown in Table 1 for complex 1.
    • LA = 2 for the copolymer does not indicate the randomness, as shown in Table 1 for complex 1.
  • 37
    • 77249131811 scopus 로고    scopus 로고
    • See the Supporting Information
    • See the Supporting Information.
  • 38
    • 77249117755 scopus 로고    scopus 로고
    • LA = 2.8 by the NLLS method.
    • LA = 2.8 by the NLLS method.
  • 39
    • 67649196800 scopus 로고    scopus 로고
    • For references on the NLLS method, see: a
    • For references on the NLLS method, see: (a) Chen, Y.; Sen, A. Macromolecules 2009, 42, 3951.
    • (2009) Macromolecules , vol.42 , pp. 3951
    • Chen, Y.1    Sen, A.2
  • 42
    • 77249084203 scopus 로고    scopus 로고
    • g value of - 13 °C for the random copolymer expected on the basis of the empirical relations of the Fox equation (see Chapter 11.2 of ref 10)
    • The DSC measurement on the obtained random copolymer showed a distinct
    • g value of - 13 °C for the random copolymer expected on the basis of the empirical relations of the Fox equation (see Chapter 11.2 of ref 10). No melting temperature was observed.
    • No melting temperature was observed
  • 47
    • 84986802598 scopus 로고    scopus 로고
    • There are reports that the ring sizes of lactones influence the Lewis basicity of their carboxyl groups: δ-valerolactone, which is a six-membered lactone, is more basic than CL. See: (a) Okamoto, Y. Makromol. Chem, Macromol. Symp. 1991, 42/43, 117
    • There are reports that the ring sizes of lactones influence the Lewis basicity of their carboxyl groups: δ-valerolactone, which is a six-membered lactone, is more basic than CL. See: (a) Okamoto, Y. Makromol. Chem., Macromol. Symp. 1991, 42/43, 117.
  • 50
    • 77249116282 scopus 로고    scopus 로고
    • Even if the Lewis basicity of each carboxyl group of CL and LA is the same, LA has the double potential for coordination with the catalyst because each LA molecule has two carboxyl groups
    • Even if the Lewis basicity of each carboxyl group of CL and LA is the same, LA has the double potential for coordination with the catalyst because each LA molecule has two carboxyl groups.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.