温敏性凝胶壳聚糖/纤维素/甘油体系的制备及性能研究

温敏性凝胶壳聚糖/纤维素/甘油体系的制备及性能研究

O636; 采用共混法将壳聚糖(CS)和羟丙基甲基纤维素(HPMC)共混后制备一系列CS/HPMC溶液.考察了CS、HPMC、甘油(Gyl)质量分数以及HPMC分子质量对体系最低临界转变温度(LCST)的影响.同时,探究CS/HPMC/Gyl水凝胶最佳制备质量比为1∶5∶60.通过SEM、流变仪对该体系进行了表征,讨论了CS/HPMC/Gyl体系凝胶的温敏性、流变性和黏弹性.结果 表明,CS/HPMC/Gyl溶液体系具有一定的温敏性,且在反应后的储能模量均大于损耗模量;在CS/HPMC/Gyl溶液体系中,同一低黏度下的HPMC在同一剪切频率下随着HPMC质量分数的增大剪切黏度增大....

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Veröffentlicht in:现代化工 2020-07, Vol.40 (7), p.155-165
Hauptverfasser: 王俊, 许莉, 刘世梁, 喻琴
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container_end_page 165
container_issue 7
container_start_page 155
container_title 现代化工
container_volume 40
creator 王俊
许莉
刘世梁
喻琴
description O636; 采用共混法将壳聚糖(CS)和羟丙基甲基纤维素(HPMC)共混后制备一系列CS/HPMC溶液.考察了CS、HPMC、甘油(Gyl)质量分数以及HPMC分子质量对体系最低临界转变温度(LCST)的影响.同时,探究CS/HPMC/Gyl水凝胶最佳制备质量比为1∶5∶60.通过SEM、流变仪对该体系进行了表征,讨论了CS/HPMC/Gyl体系凝胶的温敏性、流变性和黏弹性.结果 表明,CS/HPMC/Gyl溶液体系具有一定的温敏性,且在反应后的储能模量均大于损耗模量;在CS/HPMC/Gyl溶液体系中,同一低黏度下的HPMC在同一剪切频率下随着HPMC质量分数的增大剪切黏度增大.
doi_str_mv 10.16606/j.cnki.issn0253-4320.2020.07.033
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title 温敏性凝胶壳聚糖/纤维素/甘油体系的制备及性能研究
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