化学反应工程与工艺
化學反應工程與工藝
화학반응공정여공예
CHEMICAL REACTION ENGINEERING AND TECHNOLOGY
2014年
4期
310-315
,共6页
纳米胶囊%化学剪切%原位乳化%可逆加成-断裂链转移%界面聚合
納米膠囊%化學剪切%原位乳化%可逆加成-斷裂鏈轉移%界麵聚閤
납미효낭%화학전절%원위유화%가역가성-단렬련전이%계면취합
nanocapsule%chemical shearing%in-situ (mini)emulsion%reversible addition-fragmentation chain transfer%interfacial polymerization
以含羧基的双亲性可逆加成-断裂链转移（RAFT）试剂为乳液稳定剂前体，探索化学剪切法与双亲性RAFT试剂相结合制备细乳液并进而制备纳米胶囊的可行性。研究发现，通过化学剪切法可制备液滴大小为亚微米的细乳液，乳化效果与双亲性 RAFT 试剂的结构密切相关。在本研究范围内，以 poly（AAm-b-Stn）RAFT和poly（MAAm-co-Stn）RAFT为试剂的乳化效果较好，采用这两种RAFT试剂，经细乳液界面聚合均可得到核壳结构的纳米胶囊粒子，前者聚合过程的稳定性较好。
以含羧基的雙親性可逆加成-斷裂鏈轉移（RAFT）試劑為乳液穩定劑前體，探索化學剪切法與雙親性RAFT試劑相結閤製備細乳液併進而製備納米膠囊的可行性。研究髮現，通過化學剪切法可製備液滴大小為亞微米的細乳液，乳化效果與雙親性 RAFT 試劑的結構密切相關。在本研究範圍內，以 poly（AAm-b-Stn）RAFT和poly（MAAm-co-Stn）RAFT為試劑的乳化效果較好，採用這兩種RAFT試劑，經細乳液界麵聚閤均可得到覈殼結構的納米膠囊粒子，前者聚閤過程的穩定性較好。
이함최기적쌍친성가역가성-단렬련전이（RAFT）시제위유액은정제전체，탐색화학전절법여쌍친성RAFT시제상결합제비세유액병진이제비납미효낭적가행성。연구발현，통과화학전절법가제비액적대소위아미미적세유액，유화효과여쌍친성 RAFT 시제적결구밀절상관。재본연구범위내，이 poly（AAm-b-Stn）RAFT화poly（MAAm-co-Stn）RAFT위시제적유화효과교호，채용저량충RAFT시제，경세유액계면취합균가득도핵각결구적납미효낭입자，전자취합과정적은정성교호。
The amphiphilic reversible addition-fragmentation chain transfer(RAFT) agent with multi-carboxylic acid groups was used as the surfactant precursor to prepare the miniemulsion of styrene and paraffin by chemical shearing method. It was found that the sub-micrometer particles could be prepared by chemical shearing, and the compositions and structures of the RAFT agents had significant influence on the formation of miniemulsions. The poly(AAm-b-Stn)RAFT and poly(MAAm-co-Stn)RAFT showed better emulsifying ability. The well-defined nanocapsules of paraffin(core-structure nanocapsule particles) could be obtained using the two RAFT agents by interfacial miniemulsion polymerization, and the polymerization was more stable using the first RAFT.
