Ultrasound-assisted synthesis of benzoxazine monomers: thermal and mechanical properties of polybenzoxazines

被引：27

作者：

Vengatesan, Muthukumaraswamy Rangaraj ^{[1
,3
]}

Devaraju, Subramani ^{[1
]}

Kannaiyan, Dinakaran ^{[2
]}

Song, Jang Kun ^{[3
]}

Alagar, Muthukaruppan ^{[1
]}

机构：

[1] Anna Univ, Dept Chem Engn, Polymer Nanocomposite Lab, Madras 600025, Tamil Nadu, India

[2] Anna Univ, Dept Chem, Madras 600044, Tamil Nadu, India

[3] Sungkyunkwan Univ, Dept Elect & Elect Engn, Suwon, South Korea

来源：

POLYMER INTERNATIONAL | 2013年 / 62卷 / 01期

关键词：

polybenzoxazine; ultrasound; thermal stability; tensile strength; flexural strength; curing behavior; POLYMERIZATION; NANOCOMPOSITES; COPOLYMERS; RESINS;

D O I：

10.1002/pi.4337

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of benzoxazine monomers (P-aea2-P-aea8) were prepared from appropriate aromatic diamines containing linear aliphatic ether chains with phenol and formaldehyde through the Mannich reaction under ultrasonication and conventional methods. Based on the reaction performance, the ultrasonication method has been found to be more facile and convenient for the synthesis of benzoxazine monomer than the conventional method. The synthesized monomers undergo curing at a lower temperature than that of conventional benzoxazine (Ba-A) monomer as evidenced from differential scanning calorimetric analysis. The presence of an aliphatic ether core in the benzoxazine monomer aids in lowering the curing temperature, which seems to vary linearly with chain length. Thermally polymerized benzoxazine (poly(P-aea(s))) shows an enhanced tensile and flexural strength. (C) 2012 Society of Chemical Industry

引用

页码：127 / 133

页数：7

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