摘要
以丙烯酸(AA)为功能单体、苯乙烯(St)为硬单体、丙烯酸丁酯(BA)为软单体、聚乙烯醇(PVA)为保护剂和分散剂,根据明胶在酸性溶液中呈阳离子的特点,采用无皂种子乳液聚合法制备核/壳型明胶接枝共聚物乳液施胶剂。采用单因素试验法优选制备施胶剂的最佳工艺条件,并对施胶剂的理化性能和应用性能进行了研究。结果表明:当m(明胶):m(AA):m(St):m(BA):m(PVA)=3:0.5:6:4:0.25、w(引发剂)=5%和反应温度为85℃时,明胶接枝共聚物乳液施胶纸的应用性能接近甚至超过进口同类产品,其耐水性明显优于原纸(两者水接触角分别为104°、73°)。
With acrylic acid（AA） as functional monomer,styrene（St） as hard monomer,butyl acrylate（BA） as soft monomer and polyvinyl alcohol（PVA） as protective agent and dispersing agent,a gelatin graft copolymer（gelatin-g-copolymer） emulsion with core/shell structure as sizing agent was prepared by soap-free seeded emulsion polymerization,according to cation characteristic of gelatin in acidic solution.The optimal process conditions of preparing sizing agent were preferred by single factor experiment method,and the physicochemical properties and application properties of the sizing agent were investigated.The results showed that the application properties of sizing paper,which was treated by the gelatin-g-copolymer emulsion,were nearer or more than those by the import congeneric product,the water resistance of sizing paper was better than that of raw paper because the water contact angles of the former and the latter were 104° and 73° respectively when mass ratio of m（gelatin）：m（AA）：m（St）：m（BA）：m（PVA） was 3：0.5：6：4：0.25,and mass fraction of initiator was 5% and reaction temperature was 85 ℃.
出处
《中国胶粘剂》
CAS
北大核心
2011年第4期26-30,共5页
China Adhesives
基金
陕西科技大学研究生创新基金资助项目
关键词
明胶
接枝
核/壳结构
苯丙乳液
施胶剂
gelatin
graft
core-shell structure
styrene-acrylate emulsion
sizing agent
