PVA水凝胶(PVA-H)的干燥与溶胀性能

Drying and Swelling of PVA(Poly Vinyl Alcohol)

摘要: 研究了室温自然干燥和酒精脱水干燥对于干态PVA水凝胶在30℃的蒸馏水中2次溶胀性能的影响.结果表明,用酒精脱水干燥的PVA水凝胶的2次溶胀度大于在室温自然干燥的PVA水凝胶的2次溶胀度.对湿态PVA水凝胶未进行干燥处理前先进行1次溶胀后,再用同一种于燥方法处理2种试样,结果表明,经过1次溶胀的PVA水凝胶在2种干燥条件下的2次溶胀度均大于未经过1次溶胀的PVA水凝胶的2次溶胀度.

Abstract: The effects of different drying methods and procedures which are used to deal with poly(vinyl alcohol) on the swelling degree of poly (vinyl alcohol) gel have been investigated. The solubility of poly(vinyl alcohol) dried by alcohol is larger than that of poly(vinyl alcohol) dried by the air. The swelling degree of poly (vinyl alcohol) first swelled after thawing is larger than that of poly(vinyl alcohol) without first swelled after thawing.