应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2015年
6期
1068-1071
,共4页
淀粉%阳离子化%接枝共聚%接枝率%粘合强度%薄膜
澱粉%暘離子化%接枝共聚%接枝率%粘閤彊度%薄膜
정분%양리자화%접지공취%접지솔%점합강도%박막
starch%cationization%graft copolymerization%grafting ratio%adhesion%film
通过先对玉米淀粉进行季铵型阳离子化预处理,再采用Fe2+-H2 O2氧化还原体系,引发阳离子淀粉与丙烯酸( AA)进行接枝共聚反应,制备了一系列具有不同接枝率的阳离子淀粉接枝聚丙烯酸( CS-g-PAA),研究了接枝率对CS-g-PAA薄膜性能及其与纤维之间粘合强度的影响。结果表明,这种接枝共聚合能够提高阳离子淀粉的粘合强度及薄膜性能；随着接枝率的提高,CS-g-PAA的粘合强度增大,薄膜的断裂强度降低,断裂伸长率增加,水溶性提高,吸湿率增大。综合考虑接枝效率、粘合强度和薄膜性能,CS-g-PAA的接枝率为8.5%为宜。
通過先對玉米澱粉進行季銨型暘離子化預處理,再採用Fe2+-H2 O2氧化還原體繫,引髮暘離子澱粉與丙烯痠( AA)進行接枝共聚反應,製備瞭一繫列具有不同接枝率的暘離子澱粉接枝聚丙烯痠( CS-g-PAA),研究瞭接枝率對CS-g-PAA薄膜性能及其與纖維之間粘閤彊度的影響。結果錶明,這種接枝共聚閤能夠提高暘離子澱粉的粘閤彊度及薄膜性能；隨著接枝率的提高,CS-g-PAA的粘閤彊度增大,薄膜的斷裂彊度降低,斷裂伸長率增加,水溶性提高,吸濕率增大。綜閤攷慮接枝效率、粘閤彊度和薄膜性能,CS-g-PAA的接枝率為8.5%為宜。
통과선대옥미정분진행계안형양리자화예처리,재채용Fe2+-H2 O2양화환원체계,인발양리자정분여병희산( AA)진행접지공취반응,제비료일계렬구유불동접지솔적양리자정분접지취병희산( CS-g-PAA),연구료접지솔대CS-g-PAA박막성능급기여섬유지간점합강도적영향。결과표명,저충접지공취합능구제고양리자정분적점합강도급박막성능；수착접지솔적제고,CS-g-PAA적점합강도증대,박막적단렬강도강저,단렬신장솔증가,수용성제고,흡습솔증대。종합고필접지효솔、점합강도화박막성능,CS-g-PAA적접지솔위8.5%위의。
Corn starch was subjected first to cationic pretreatment and then to the graft polymerization of cationic starch with acrylic acid ( AA ) . A series of cationic starch-g-poly ( acrylic acid ) ( CS-g-PAA ) samples with different grafting ratios were synthesized via the graft copolymerization initiated by Fe2+-H2 O2 . The effects of grafting ratio on the adhesion-to-fibers and film properties of CS-g-PAA were exam-ined. The results showed that the copolymerization could improve the adhesion and film properties of cat-ionic starch. The adhesion-to-fibers increased as grafting ratio rose. For the film properties, with the in-crease of grafting ratio,the breaking elongation and hygroscopicity of CS-g-PAA film increased,whereas the strength of starch film and the time required to break the film in water decreased. Based on the results of grafting efficiency,adhesion and film properties,desirable grafting ratio for CS-g-PAA is 8. 5%.
