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首页> 外文期刊>Journal of Applied Polymer Science >Emulsifying and self-emulsified properties of siloxane polymer grafted with easy hydrophile
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Emulsifying and self-emulsified properties of siloxane polymer grafted with easy hydrophile

机译：易亲水接枝硅氧烷聚合物的乳化和自乳化性能

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A series of siloxane polymers (SHE) with varying weight percents of simple nonionic hydrophilic groups have been synthesized and characterized by FTIR and C-13-NMR. Emulsions have been made by self-emulsification of those polymers in pure water and also by emulsifying silicone oil using those polymers as oil-in-water type emulsifiers. The stability of those emulsions have been examined apparently from the phase separation and also from the particle size increase on storage by Transmission Electron Microscopy (TEM) and photo microscopy. The results reviled that SHE 40, having 40 wt % grafted hydrophile, formed the most stable self-emulsified emulsion, and SHE30 and SHE40 could be used as effective emulsifiers for silicone oil emulsification. The possible use of those emulsions as a defoamer for water-borne systems has also been investigated by measuring the reduction of foam height of a strongly foamed aqueous solution of sodium lauryl sulfate (SLS). The defoaming ability decreases with the increase in hydrophile wt % in the polymer backbone; however, it increases with the emulsion (defoamer) concentrations. When compared with respect to the total wt % of hydrophobe contents in the emulsion defomer, the self-emulsified emulsion has shown better defoaming than the silicone oil emulsion, and the results are well in accord with the difference in size of the respective emulsion particles. (C) 2002 Wiley Periodicals, Inc. [References: 17]
机译：合成了一系列具有不同重量百分比的简单非离子亲水基团的硅氧烷聚合物（SHE），并通过FTIR和C-13-NMR对其进行了表征。通过在纯水中自乳化那些聚合物以及通过使用那些聚合物作为水包油型乳化剂乳化硅油来制备乳液。显然已经从相分离以及通过储存电子透射显微镜（TEM）和光学显微镜从粒度增加中检查了那些乳液的稳定性。结果谴责了具有40 wt％接枝亲水剂的SHE 40形成了最稳定的自乳化乳液，并且SHE30和SHE40可以用作硅油乳化的有效乳化剂。还通过测量月桂基硫酸钠（SLS）的强泡沫水溶液的泡沫高度降低来研究了这些乳液作为水性体系消泡剂的可能性。消泡能力随聚合物主链中亲水性wt％的增加而降低;但是，它随乳液（消泡剂）浓度的增加而增加。当相对于乳液消泡剂中疏水物含量的总wt％进行比较时，自乳化的乳液显示出比硅油乳液更好的消泡性，并且结果与各个乳液颗粒的尺寸差异非常一致。 （C）2002 Wiley Periodicals，Inc. [参考：17]

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