应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2015年
4期
685-688,691
,共5页
钱景茹%李琛%杨成
錢景茹%李琛%楊成
전경여%리침%양성
淀粉纳米晶%有机硅弹性微球%Pickering乳液聚合%形态
澱粉納米晶%有機硅彈性微毬%Pickering乳液聚閤%形態
정분납미정%유궤규탄성미구%Pickering유액취합%형태
starch nanocrystal%silicone elastomer microsphere%Pickering emulsion polymerization%mor-phology
通过酸降解蜡性玉米淀粉制备了淀粉纳米晶。利用淀粉纳米晶乳化稳定乙烯基硅油和含氢硅油混合物形成Pickering乳液，然后通过硅氢加成制备了淀粉纳米晶涂覆的有机硅弹性微球。当淀粉纳米晶浓度为0．1％以上，就可以获得稳定乳液。随淀粉纳米晶浓度从0．1％增加到5．0％，乳液的粒径从70μm减小至17μm。有机硅微球的粒径同乳液粒径相比没有明显变化，涂覆在有机硅微球表面的淀粉纳米晶由聚集的微粒变成连续的层状物。
通過痠降解蠟性玉米澱粉製備瞭澱粉納米晶。利用澱粉納米晶乳化穩定乙烯基硅油和含氫硅油混閤物形成Pickering乳液，然後通過硅氫加成製備瞭澱粉納米晶塗覆的有機硅彈性微毬。噹澱粉納米晶濃度為0．1％以上，就可以穫得穩定乳液。隨澱粉納米晶濃度從0．1％增加到5．0％，乳液的粒徑從70μm減小至17μm。有機硅微毬的粒徑同乳液粒徑相比沒有明顯變化，塗覆在有機硅微毬錶麵的澱粉納米晶由聚集的微粒變成連續的層狀物。
통과산강해사성옥미정분제비료정분납미정。이용정분납미정유화은정을희기규유화함경규유혼합물형성Pickering유액，연후통과규경가성제비료정분납미정도복적유궤규탄성미구。당정분납미정농도위0．1％이상，취가이획득은정유액。수정분납미정농도종0．1％증가도5．0％，유액적립경종70μm감소지17μm。유궤규미구적립경동유액립경상비몰유명현변화，도복재유궤규미구표면적정분납미정유취집적미립변성련속적층상물。
Starch nanocrystals were prepared by acid hydrolysis of waxy corn starch .It was found starch nanocrystal could stabilize the mixture of methylvinylpolysiloxane and methylhydrogenpolysiloxane .The silicone elastomer microspheres coated with starch nanocrystal were prepared via Pickering emulsion poly -merization .The size of silicone elastomer microsphere decreased with the increasing of starch nanocrystal content.When starch nanocrystal content was above 0.1%, the stable emulsion could be formed .The size of emulsion droplets decreased from 70~17 μm as starch nanocrystal content increased from 0.1%~5 .0%.Compared to the size of emulsion droplets , the size of silicone microsphere had no significant change .The morphology of starch nanocrystal aggregate adsorbed on the silicone microsphere surface be -came from microparticle to layer .
