Flame retardance and shrinkage reduction of polystyrene modified with acrylate-containing phosphorus and crosslinkable spiro-orthoester moieties

被引：45
作者：
Canadell, J.
Hunt, B. J.
Cook, A. G.
Mantecon, A.
Cadiz, V.
机构：
[1] Univ Rovira & Virgili, Dept Quim Analit & Quim Organ, Tarragona 43007, Spain
[2] Univ Sheffield, Ctr Polymer, Dept Chem, Sheffield S3 7HF, S Yorkshire, England
来源：
POLYMER DEGRADATION AND STABILITY | 2007年 / 92卷 / 08期
关键词：
styrene; spiro-orthoester; radical polymerization; heteroatom-containing polymer; cationic crosslinking;
D O I：
10.1016/j.polymdegradstab.2007.05.017
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Styrene was radically copolymerized with a spiro-orthoester with an acrylate group (SOE-AC), and terpolymerized with SOE-AC and diethyl(methacryloyloxymethyl)phosphonate (DENINIP). This was done for several different feed ratios, to obtain polymers with spiro-orthoester moieties in the side chain. These polymers were then crosslinked with ytterbiurn triflate, as cationic initiator, via the double ring-opening polymerization. The thermal stability and fire retardant properties of these materials were evaluated by TGA and LOI. The DENIMP-containing polymers give materials which were significantly more flame retardant than the nonphosphorus-containing materials, as indicated by the LOI measurements. The volume changes measured upon crosslinking of the polymers were evaluated by density measurements with a gas pycnometer. In all the cases, expansion was observed. This indicates that SOE-AC is an effective monomer for crosslinkable polymers without volume changes. (c) 2007 Elsevier Ltd. All rights reserved.
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页码：1482 / 1490
页数：9
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