广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
2期
39-40
,共2页
二步溶胀法%核壳型微球%大粒径
二步溶脹法%覈殼型微毬%大粒徑
이보용창법%핵각형미구%대립경
two steps swelling method%core-shell particles%large size
以聚乙烯基吡咯烷酮（PVP）作为分散剂,以偶氮二异丁腈（AIBN）作为引发剂,在以水为溶剂的体系中以苯乙烯为单体制备出纳米级种子微球;然后利用二步溶胀法再分别以苯乙烯（St）和甲基丙烯酸甲酯（MMA）为单体,进而制备出微米级的核壳型微球。运用动态激光光散射仪对粒子半径的进行表征,其中以甲基丙烯酸甲酯为单体所制备核壳型微球粒子的半径为953 nm;以苯乙烯为单体所制备核壳型微球粒子的半径为808 nm。
以聚乙烯基吡咯烷酮（PVP）作為分散劑,以偶氮二異丁腈（AIBN）作為引髮劑,在以水為溶劑的體繫中以苯乙烯為單體製備齣納米級種子微毬;然後利用二步溶脹法再分彆以苯乙烯（St）和甲基丙烯痠甲酯（MMA）為單體,進而製備齣微米級的覈殼型微毬。運用動態激光光散射儀對粒子半徑的進行錶徵,其中以甲基丙烯痠甲酯為單體所製備覈殼型微毬粒子的半徑為953 nm;以苯乙烯為單體所製備覈殼型微毬粒子的半徑為808 nm。
이취을희기필각완동（PVP）작위분산제,이우담이이정정（AIBN）작위인발제,재이수위용제적체계중이분을희위단체제비출납미급충자미구;연후이용이보용창법재분별이분을희（St）화갑기병희산갑지（MMA）위단체,진이제비출미미급적핵각형미구。운용동태격광광산사의대입자반경적진행표정,기중이갑기병희산갑지위단체소제비핵각형미구입자적반경위953 nm;이분을희위단체소제비핵각형미구입자적반경위808 nm。
Using polyethylene pyrrolidone,azobisisobutyronitrile and styrene as the dispersing agent,initiator and monomer,respectively,we prepared the nanometer level seed microspheres.Then in the process for preparation of the micro-size core-shell particles by two-step swelling method,we selected the styrene and methyl methacrylate as the second monomer respectively.The hydrodynamic radius of polymer particles and its distribution were measured by Dynamic Laser Light Scattering（DLLS）.Preparing core-shell granule which takes the styrene as the monomer the radius size distributed at about 808 nm majority;preparing core-shell granule which takes the methyl methacrylate as the monomer the radius size distributed at about 953 nm.
