摘要
采用半连续种子乳液聚合方法,制备了以聚苯乙烯(PSt)/有机蒙脱土(OMMT)为核,聚丙烯酸正丁酯(PBA)为壳的核壳纳米复合材料(CSN)。借助傅里叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)考察了CSN的粒子结构及形貌,显示CSN呈球形,核壳结构明显。通过种子用量、核壳质量配比、引发剂用量及单体总量对乳液性能的研究,结果表明,当种子用量为20%,核壳质量配比2∶1,引发剂用量0.6%(wt),单体总量45%(wt)时,乳液的固含量、转化率较高,耐水性、化学稳定性及机械稳定性较好。热重分析(TGA)表明CSN复合材料热稳定性有所提高。
A core-shell structured nanocomposite （CSN） with polystyrene （PSt）/organophilic montmorillonite （OMMT） as core and poly（butyl acrylate） （PBA） as shell were prepared through seed emulsion polymerization. The structure and morphology of CSN particle were examined through infrared spectrometry （FTIR）, scanning electron microscopy（SEM） and transmission electron microscopy（TEM）. CSN was spherical, with an evident core-shell structure. Through studying of seed dosage, core-shell quality ratio, amount of initiator and total monomers on the properties of emulsion, results showed that when seed dosage, core-shell quality ratio, amount of initiator and total monomers were 20 % （wt）, 2：1.0.6% （wt） and 45% （wt） respectively, the solid content and conversion rate of emulsion were higher, and water resistance, chemical stability and mechanical stability were better. Thermogravimetric analysis （TGA） showed that thermal stability of CSN was improved.
出处
《高分子通报》
CAS
CSCD
北大核心
2016年第8期81-88,共8页
Polymer Bulletin
基金
广东省教育厅科技创新项目(2013KJCX0194)资助
广东省大学生创新项目(201410580042)
肇庆学院大学生创新项目(DC201445)
