Film formation of high poly(vinyl chloride) content latex particles

被引：7

作者：

Brito, Elvis Lopes ^{[1
]}

Willocq, Bertrand ^{[2
]}

Boschet, Frederic ^{[2
]}

Ballard, Nicholas ^{[1
,3
]}

机构：

[1] Univ Basque Country UPV EHU, POLYMAT, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, Donostia San Sebastian 20018, Spain

[2] Inovyn Mfg Belgium SA, Rue Solvay 39, B-5190 Jemeppe Sur Sambre, Belgium

[3] Basque Fdn Sci, Ikerbasque, Plaza Euskadi 5, Bilbao 48009, Spain

来源：

PROGRESS IN ORGANIC COATINGS | 2023年 / 183卷

关键词：

Latex; Emulsion polymerization; Poly(vinyl chloride); MECHANICAL-PROPERTIES; MORPHOLOGY; POLYMERIZATION;

D O I：

10.1016/j.porgcoat.2023.107783

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Although poly(vinyl chloride) (PVC) is produced on a large scale industrially by emulsion and suspension polymerization, it is usually processed from the dry state and is seldom directly used as an aqueous polymer dispersion. In this work we demonstrate that by control of particle morphology and particle size distribution it is possible to produce latexes with high PVC content from which polymer films can be cast directly. A series of hybrid PVC/acrylic latexes with a core-shell structure are produced by semi-batch emulsion polymerization using a preformed PVC latex as a seed. Although monomodal particles of this type have a minimum film formation temperature in excess of 80 degrees C when the content of PVC is high, it is shown that through the use of a bimodal particle size distribution the packing efficiency of the spherical PVC domains is increased such that room temperature film formation is possible with PVC content up to 80 wt%.

引用

页数：9

共 28 条

[1]

Brandrup J., 1999, Polymer Handbook

[2] Influence of the particle size and particle size ratio on the morphology and viscoelastic properties of bimodal hard/soft latex blends [J].