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Volumn 20, Issue 16, 2004, Pages 6535-6537

Patterned dual pH-responsive core-shell hydrogels with controllable swelling kinetics and volumes

Author keywords

[No Author keywords available]

Indexed keywords

ACIDIC BUFFERS; MICROGELS; PHOTOMASKS; POLYMER MATRIX;

EID: 4043077001     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la049453y     Document Type: Article
Times cited : (49)

References (31)
  • 11
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    • 4043087085 scopus 로고    scopus 로고
    • note
    • Hydrogel structures were prepared by photoinitiated free radical polymerization of a pre-polymer mixture containing 2-hydroxyethyl methacrylate (hydrophilic monomer, 7.7 mmol), ethylene glycol dimethacrylate (cross-linker, 0.02 mmol), 2,2-dimethoxy-2-phenylacetophenone (photoinitiator, 3 wt %), and either DMAEMA (1.4 mmol) or VP (1.1 mmol) as an ionizable monomer. Photomasks were created in Adobe Illustrator and printed on transparency films using a high-resolution commercial printer system (Linotype Herkules Imagesetter) with a resolution of 5080 dpi. Microchannels were prepared by applying Scotch double-sided tape to a 75×501 mm glass slide (Fisher Scientific) as side walls and capping with a 22×50 mm no. 1 cover glass slide. Plastic pipet tips (United Laboratory) were cut to the desired length with a razor blade and glued to both ends of the microchannel with Loctite Quick Set epoxy to serve as the inlet and outlet for the microchannel. Polymerization times using a UV source from an Olympus Epi-Pluorescent microscope (BX-60) through a near-UV filter cube (U-MNUA, type BP 360-370) with a 360-370-nm band-pass were 120 and 270 s for hydrogel-DMAEMA and hydrogel-VP, respectively. After polymerization, residual monomers were washed away with methanol and the resulting hydrogel structures were stored in deionized water and visualized in real time using a Sony CCD-IRIS/RGB color video camera attached to the Olympus microscope.
  • 31
    • 4043074264 scopus 로고    scopus 로고
    • note
    • Because these hydrogels displayed an initial dormant stage, the graphed data only displayed points after swelling was initiated.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.