| Effect of HEMA and NVP on Hydrophilicity of Silicone Rubber |
| Received:March 08, 2018 Revised:March 08, 2018 |
| DOI： |
| Key Words: methyl vinyl thermosetting addition-type silicone rubber；semi-interpenetrating polymer network；hydroxyethyl methacrylate；N-vinyl pyrrolidone；UV irradiation；hydrophilicity |
| Author Name | Affiliation | E-mail | | YAO Hainan | Beijing Laboratory of Biomedical materials,Beijing University of Chemical Technology | 1337637425@qq.com | | DING Xuejia* | Beijing Laboratory of Biomedical materials,Beijing University of Chemical Technology | dingxj2011@126.com |
|
| Hits: 910 |
| Download times: 465 |
| Abstract: |
| Using methylvinyl thermosetting addition type silicone rubber，hydroxyethyl methacrylate（HEMA） or N-vinyl pyrrolidone（NVP） as raw material，benzophenones（BP） and benzoin dimethyl ether（DMPA） as photoinitiators，hydrophilic poly（hydroxyethyl methacrylate）（PHEMA） or poly（vinylpyrrolidone）（PVP） were introduced into solid silicone rubber（SiR） by UV polymerization，and semi-interpenetrating polymer network（S-IPN） could be obtained.The test results showed that，the stretching vibration characteristic peaks of O—H bond and C=O bond in PHEMA and PVP appeared in the infrared spectrum of SiR/HEMA and SiR/NVP composites.Obvious protrusions cross-section could be seen in the electron microscope photos of composites.The mass loss rate of SiR was 69.11%，and that of SiR/HEMA and SiR /NVP composites were 80.72% and 79.27%，respectively.The decomposition rates of two kinds of composites at high temperature were higher than that of SiR.The initial static water contact angle of SiR was 107.5°，and that of SiR/HEMA and SiR/NVP composites were 52.2° and 20.8°，respectively.In conclusion，it was confirmed that S-IPNs were formed in SiR/HEMA and SiR/NVP composites，the hydrophilicity of two kinds of composites were improved greatly，and hydrophilicity of SiR/NVP composite were obviously superior to those of SiR/HEMA composite. |
|
View Full Text
View/Add Comment Download reader |
| Close |
