Unsaturated Polyesters with Pendant Double Bonds and Investigation of their Self Curable Activity

Hai Yan Li; Yi Yu Chen; Fang Fang Zhu; Chong Wen Li

doi:10.4028/www.scientific.net/AMR.1052.262

Paper Titles

Research on Performance of Polyimide In Situ Modification Anionic Polymerization Nylon 6
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Simultaneous Improvement of Mechanical Properties and Thermal Stability of Polyurethane by Polyethylene Glycol Grafted Cellulose Nanocrystals
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Study on Carbon Fiber Reinforced Chloroprene Rubber Composites
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Study on Short Basalt Fiber Reinforced Fluorine Rubber Composites
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Unsaturated Polyesters with Pendant Double Bonds and Investigation of their Self Curable Activity
p.262

Inhibition of Potassium Citrate on Aggregation of Nano Calcium Oxalate Crystal in Four Different Systems
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Aggregation of Nano- and Micro-Crystallites in Urine of Uric Acid Stone Formers and Healthy Controls
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Component, Mobility and Specific Surface Area of Urinary Crystallites with Different Sizes in Urine of Healthy Human and Lithogenic Patients
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Study on Storage Conditions of Greening of Garlic Purees
p.290

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Unsaturated Polyesters with Pendant Double Bonds and Investigation of their Self Curable Activity

Abstract:

In this paper, the self-curable unsaturated polyester was put forward as a new solution to air pollution problems caused by the cross-linking monomer’s volatilization in unsaturated polyesters (UP) industry. Two kinds of unsaturated polyesters with the vinyl double bonds at the side chain were synthesized with Itaconic acid (IA) or Itaconic anhydride (ITA) as raw materials. The first one was prepared with IA, isophthalic acid and propylene glycol (IPP-UP), and the second one was synthesized with glycidol (GL) and ITA (IG-UP). Investigation demonstrates that the latter UP resin could be self-cured through the nucleophilic addition reaction of hydroxyl groups with double bonds or the free-radical homopolymerization of double bonds when they were heated without cross-linking monomers. However, the former couldn’t. Factors on self-crosslinking activity and crosslinking mechamism of pendant vinyl bonds from IA or ITA were explored.¹H-NMR and FT-IR were used to characterize.