Studies on the effect of concentration of formaldehyde on the synthesis of resole-type epoxidized phenolic resin from renewable resource material

被引：18

作者：

Shukla, Shrawan Kumar ^{[1
]}

Maithani, Arun ^{[2
]}

Srivastava, Deepak ^{[1
]}

机构：

[1] HB Technol Inst, Dept Plast Technol, Kanpur 208002, Uttar Pradesh, India

[2] HB Technol Inst, Dept Oil & Paint Technol, Kanpur 208002, Uttar Pradesh, India

来源：

DESIGNED MONOMERS AND POLYMERS | 2014年 / 17卷 / 01期

关键词：

cardanol; resole resin; FTIR; NMR; CASHEWNUT SHELL LIQUID; MECHANICAL-PROPERTIES; NATURAL-RUBBER; NOVOLAC RESIN; BLENDS; BEHAVIOR;

D O I：

10.1080/15685551.2013.840469

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Epoxidized cardanol/formaldehyde resins (ERCF) were synthesized by reacting resole type cardanol/formaldehyde resin and epichlorohydrin in basic medium at 120 degrees C. Resole-type phenolic resins were synthesized by reacting cardanol and formaldehyde (molar ratios 1:1.3, 1:1.5, 1:1.7, 1:1.9,and 1:2.1) in the presence of sodium hydroxide, as catalyst, at five different temperatures ranging between 60 and 80 degrees C with an interval of 5 degrees C for a maximum period of 6h. A set of samples were characterized by Fourier transform infrared and nuclear magnetic resonance spectroscopic analysis. The molecular size distribution of resole phenolics was studied by high-resolution gel permeation chromatography. Differential scanning calorimetry technique was used to investigate the curing behavior of the synthesized epoxy resins. Single-step mass loss in dynamic thermo gravimetric traces for the ERCF was observed.

引用

页码：69 / 77

页数：9

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