西南科技大学学报
西南科技大學學報
서남과기대학학보
JOURNAL OF SOUTHWEST CHINA INSTITUTE OF TECHNOLOGY
2012年
2期
14-19
,共6页
段涛%聂冬梅%竹文坤%唐永建
段濤%聶鼕梅%竹文坤%唐永建
단도%섭동매%죽문곤%당영건
中空聚合物微球%乳液聚合%酸碱溶胀法%核壳结构
中空聚閤物微毬%乳液聚閤%痠堿溶脹法%覈殼結構
중공취합물미구%유액취합%산감용창법%핵각결구
Hollow polymer microspheres%Emulsion polymerization%Acid alkali swelling method%Core/shell structure
通过种子乳液聚合法制备得到亲水核与核壳结构微球,采用酸碱溶胀法处理核壳微球,制备了微米级中空微球。扫描电子显微镜、透射电子显微镜等测试分析表明,单分散性的亲水核平均直径约465nm;单分散的核壳微球表面略显粗糙,平均直径约560nm,疏水壳层厚度约100nm;微米级中空微球的直径约1.20μm,中空度为21.6%,其单分散性与球形度良好。在亲水核聚合过程中,当m(MMA)/m(MAA)=1.77:1时,乳液反应体系稳定,得到亲水核微球的单分散性最好。
通過種子乳液聚閤法製備得到親水覈與覈殼結構微毬,採用痠堿溶脹法處理覈殼微毬,製備瞭微米級中空微毬。掃描電子顯微鏡、透射電子顯微鏡等測試分析錶明,單分散性的親水覈平均直徑約465nm;單分散的覈殼微毬錶麵略顯粗糙,平均直徑約560nm,疏水殼層厚度約100nm;微米級中空微毬的直徑約1.20μm,中空度為21.6%,其單分散性與毬形度良好。在親水覈聚閤過程中,噹m(MMA)/m(MAA)=1.77:1時,乳液反應體繫穩定,得到親水覈微毬的單分散性最好。
통과충자유액취합법제비득도친수핵여핵각결구미구,채용산감용창법처리핵각미구,제비료미미급중공미구。소묘전자현미경、투사전자현미경등측시분석표명,단분산성적친수핵평균직경약465nm;단분산적핵각미구표면략현조조,평균직경약560nm,소수각층후도약100nm;미미급중공미구적직경약1.20μm,중공도위21.6%,기단분산성여구형도량호。재친수핵취합과정중,당m(MMA)/m(MAA)=1.77:1시,유액반응체계은정,득도친수핵미구적단분산성최호。
Hollow polymer microspheres in micrometer scale based on latex polymerizing and acid alkai swelling were successfully prepared. As clearly revealed by the Scanning electron microscopy(SEM) and transmission electron microscope(TEM) indicates that the diameter of uniform hydrophilic latex cores is a- bout 465 nm. And the surfaces of core/shell particles with mean diameter 560 nm and thickness of hydro- phobic shell 100 nm are a little rough. The size of monodisperse hollow polymer microspheres is about 1.20μm. Their hollowness is 21.6%. When m ( MMA)/rn (MAA) equals to 1.77 : 1, the latex sys- tem is stable and the synthesized hydrophilie latex cores show a significant monodisperse.