| 高强度PAM/PVA互穿网络水凝胶的合成 |
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| 引用本文： | 林建明,唐群委,吴季怀.高强度PAM/PVA互穿网络水凝胶的合成[J].华侨大学学报(自然科学版),2010,31(1). |
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| 作者姓名： | 林建明 唐群委 吴季怀 |
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| 作者单位： | 华侨大学,材料物理化学研究所,福建,泉州,362021 |
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| 基金项目： | 福建省科技计划重大专项项目(2004HZ01-3,2007HZ0001-3);;福建省自然科学基金资助项目(2006J0439) |
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| 摘 要： | 以聚丙烯酰胺(PAM)为基体,聚乙烯醇(PVA)为增强体,采用两步水溶液聚合法合成具有较高机械强度的PAM/PVA互穿网络水凝胶.研究PVA、交联剂用量对PAM/PVA互穿网络水凝胶拉伸强度及伸长率的影响,探讨水凝胶的应力松弛及析出PVA对水凝胶的增韧机理.实验表明,制备的互穿网络水凝胶具有较高的机械强度和韧性,最高拉伸强度为2.4 MPa,伸长率为3 000%.最后,采用傅里叶红外光谱(FTIR)、扫描电子显微镜(SEM)及X-射线衍射(XRD),对PAM/PVA互穿网络水凝胶的结构与形貌进行表征.
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| 关 键 词： | 互穿网络水凝胶 两步水溶液聚合 聚丙烯酰胺 聚乙烯醇 凝胶强度 |
Two-Step Synthesis of a High Mechanical Strength Polyacrylamide/Poly (Vinyl Alcohol) Interpenetrating Network Hydrogel |
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| LIN Jian-ming,TANG Qun-wei,WU Ji-huai.Two-Step Synthesis of a High Mechanical Strength Polyacrylamide/Poly (Vinyl Alcohol) Interpenetrating Network Hydrogel[J].Journal of Huaqiao University(Natural Science),2010,31(1). |
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| Authors: | LIN Jian-ming TANG Qun-wei WU Ji-huai |
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| Institution: | Institute of Material Physical Chemistry;Huaqiao University;Quanzhou 362021;China |
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| Abstract: | Polyacrylamide/poly(vinyl alcohol) interpenetrating network(PAM/PVA IPN) hydrogel was synthesized using a novel two-step aqueous polymerization method.The influences of PVA contents and crosslinker dosage on stress-strain of PAM/PVA IPN hydrogels were investigated.The tensile measurements showed that the PAM/PVA IPN hydrogel held high mechanical strength and good toughness with a highest tensile strength and elongation of 2.4 MPa and 3 000%,respectively.The strain relaxation of the hydrogels was investigate... |
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| Keywords: | interpenetrating network hydrogel two-step aqueous polymerization polyacrylamide poly (vinyl alcohol) hydrogel strengh |
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