| PVA/PAA/BC复合水凝胶的制备与性能 |
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| 引用本文： | 沈惠玲,龙丽娟,贾士儒,张贵才.PVA/PAA/BC复合水凝胶的制备与性能[J].天津科技大学学报,2011,26(3):24-28,35. |
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| 作者姓名： | 沈惠玲 龙丽娟 贾士儒 张贵才 |
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| 作者单位： | 1. 天津科技大学材料科学与化学工程学院,天津,300457
2. 工业发酵微生物教育部重点实验室,天津科技大学生物工程学院,天津,300457 |
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| 摘 要： | 利用冰冻–解冻循环法制备聚乙烯醇(PVA)/聚丙烯酸(PAA)/细菌纤维素(BC)复合水凝胶.研究BC与单体丙烯酸(AA)用量对PVA/PAA/BC复合水凝胶的力学性能和溶胀特性的影响,初步探讨PVA/PAA/BC复合水凝胶的pH敏感性.实验结果表明:随着BC添加量的增多,PVA/PAA/BC复合水凝胶的含水率和拉伸强度与PVA/PAA水凝胶相比均有一定程度的提高,SEM表明复合水凝胶的网络交联点增多;加入AA会使复合水凝胶拉伸强度减小,但溶胀性能提高很多.综合考虑,BC添加量为4%,AA添加量为8%时,各项性能均较好.
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| 关 键 词： | 聚乙烯醇 聚丙烯酸 细菌纤维素 复合水凝胶 |
Preparation and Properties of PVA/PAA/BC Composite Hydrogel |
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| SHEN Hui-ling,LONG Li-juan,JIA Shi-ru,ZHANG Gui-cai.Preparation and Properties of PVA/PAA/BC Composite Hydrogel[J].Journal of Tianjin University of Science & Technology,2011,26(3):24-28,35. |
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| Authors: | SHEN Hui-ling LONG Li-juan JIA Shi-ru ZHANG Gui-cai |
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| Institution: | SHEN Hui-ling1,LONG Li-juan1,JIA Shi-ru2,ZHANG Gui-cai2(1.College of Material Science and Chemical Engineering,Tianjin University of Science & Technology,Tianjin 300457,China,2.Key Laboratory of Industrial Fermentation Microbiology,Ministry of Education,College of Biotechnology,China) |
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| Abstract: | By means of refrigeration cycle methodt,he PVA/PAA/BC composite hydrogel was prepared.The effect of con-tent of either BC or AA monomer on the mechanical and swelling properties of PVA/PAA/BC composite hydrogel were in-vestigated.The pH sensitivity of PVA/PAA/BC composite hydrogel was also preliminary discussed.The results show that with increasing the content of BCt,he water retention abilitya,nd tensile strength of PVA/PAA/BC have enhanced in a certain degreec,omparing with that of the PVA/PAA hydrogel.Th... |
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| Keywords: | PVA PAA BC composite hydrogel |
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