OALib Journal期刊
聚合物中空微球的制备及碱后处理因素的正交试验研究
DOI: 10.11777/j.issn1000-3304.2015.14451
Keywords: 中空微球 ,种子乳液聚合 ,渗透溶胀 ,极性过渡 ,正交试验
Abstract:
首先采用种子乳液聚合法合成高羧基含量的核壳聚合物微球,然后利用碱液进行后处理,经渗透溶胀后可形成具有中空结构的聚合物微球,考察了单体加料工艺和聚合配方对聚合稳定性及微球形貌的影响,通过正交试验设计研究了不同的碱后处理条件对溶胀后微球形貌的影响程度,并进行了极差和方差分析.结果表明,控制单体加料速度和引入中间极性过渡层,有利于核壳聚合物微球的制备;碱液用量为影响溶胀后聚合物微球形貌的主要因素,碱处理温度次之,碱处理时间的影响相对较弱.当碱酸摩尔比为1~1.15,碱处理温度为80~90℃,碱处理时间为1~5h时,制得的聚合物微球具有良好的中空结构.
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