CAJ | 학술논문

以马来酸为交联剂,通过化学交联法改善聚乙烯醇的耐水性能。结果表明随着交联剂浓度的增大,经过交联的PVA耐水性显著增加;PVA的交联度及结晶度主要由热处理温度决定,随着热处理温度的升高PVA膜的溶水率明显下降;当热处理温度确定后,在一定的热处理时间内PVA的分子结构基本达到稳定状态。当MA浓度为6%,热处理条件为160℃、1.5 h时,可获得耐水性较好的PVA膜。
이마래산위교련제,통과화학교련법개선취을희순적내수성능。결과표명수착교련제농도적증대,경과교련적PVA내수성현저증가;PVA적교련도급결정도주요유열처리온도결정,수착열처리온도적승고PVA막적용수솔명현하강;당열처리온도학정후,재일정적열처리시간내PVA적분자결구기본체도은정상태。당MA농도위6%,열처리조건위160℃、1.5 h시,가획득내수성교호적PVA막。
Maleic acid （MA） as the crosslinking agent, the water resistance of polyvinyl alcohol （PVA） was improved by chemical crosslinking. The result showed that the water resistance of chemically cross -linked PVA membrane increased with the increase of MA concentrations. The degree of erosslinking and crystallinity of PVA was mainly determined by the heat treatment temperature, and the water solubilization capacity of PVA membrane decreased with the increase of treatment temperature. When the heat treatment temperature was determined, the molecular structure of PVA reached to steady state in the period of time. The optimal cross - linked conditions were maleic acid concentrations of 6%, heat treatment temperature of 160 ℃ and heat treatment time of 1.5 h.