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首页> 外文期刊>Journal of Applied Polymer Science >PEG 400/Paraffin Oil Non-Aqueous Emulsions Stabilized by PBut-Block-P2VP Block Copolymers
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PEG 400/Paraffin Oil Non-Aqueous Emulsions Stabilized by PBut-Block-P2VP Block Copolymers

机译：通过PBut-Block-P2VP嵌段共聚物稳定的PEG 400 /石蜡油非水乳液

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摘要

For the preparation of PEG 400 in paraffin oil non-aqueous biocompatible emulsions, the stabilization efficiency was compared for two well-defined poly(butadiene)-block-poly(2-vinylpyridine) (PBut-block-P2VP) block copolymers, with similar molecular weights but different compositions. The PBut(128)-block-P2VP(50) and PBut(189)-block-P2VP(37) samples, designated as copolymer A and B, respectively, are self-organized in paraffin oil as micelles with a P2VP core and a PBut corona. The PEG 400/paraffin oil emulsion characteristics were determined as a function of the copolymers concentrations and phase ratios. Higher static and shear stabilities were obtained for emulsions stabilized by copolymer B than for those obtained in the presence of copolymer A. A further difference concerns the droplet size, relative viscosity, and loss modulus values obtained at a given dispersed phase volume fraction. At constant copolymer concentrations, it appeared that copolymer B, with a longer PBut sequence, is a more efficient emulsifier and stabilizer than copolymer A. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41390.
机译：为了在石蜡油非水生物相容性乳液中制备PEG 400，比较了两种定义明确的聚（丁二烯）-嵌段-聚（2-乙烯基吡啶）（PBut-嵌段-P2VP）嵌段共聚物的稳定效率，类似分子量，但组成不同。 PBut（128）-block-P2VP（50）和PBut（189）-P2VP（37）样品分别命名为共聚物A和B，在石蜡油中以带有P2VP核心和但是电晕。确定PEG 400 /石蜡油乳液特性与共聚物浓度和相比的关系。用共聚物B稳定的乳液比在共聚物A存在下获得的乳液具有更高的静态和剪切稳定性。另一个差异涉及在给定的分散相体积分数下获得的液滴尺寸，相对粘度和损耗模量值。在恒定的共聚物浓度下，似乎具有更长的PBut序列的共聚物B是比共聚物A更有效的乳化剂和稳定剂。（c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41390。

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