Welcome to Chemistry and Industry of Forest Products,

Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (6): 29-36.doi: 10.3969/j.issn.0253-2417.2019.06.004

Previous Articles     Next Articles

Preparation and Properties of Dual-crosslinking Polymer Based on Hemp Oil

Jing YI1,2,Jianling XIA1,2,3,Mei LI1,2,3,Lina XU1,3,Haiyang DING1,3,Shouhai LI1,2,3,*()   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
    2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
    3. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2019-06-24 Online:2019-12-28 Published:2019-12-21
  • Contact: Shouhai LI E-mail:lishouhai1979@163.com
  • Supported by:
    中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017MB017)

Abstract:

A novel type of dual-crosslinking resin monomer(MA-AEHO) containing carboxyls and vinyls was synthesized using hemp oil (HO) as raw material.The monomer structure was characterized by FT-IR and 1H NMR. Two single-crosslinking polymers (polymer 1 and 2) and two dual-crosslinking polymers (polymer 3 and 4) were obtained by the polymerization of MA-AEHO with the different curing and cross-linking processes. The properties of four polymers were tested.Mechanical performance tests showed that the tensile strength of polymer 1-4 is 9.21, 14.73, 32.05 and 33.25 MPa, and the elongation at break is 56.21%, 9.97%, 4.56% and 3.18%, respectively. Their tensile strengths were significantly improved and the elongations at break were decreased compared with the single-crosslinking polymers. Dynamic thermal mechanical analysis showed that the dual-crosslinking polymers (polymer 3 and 4) have relatively higher energy storage modulus (32.00 and 41.29 MPa) and glass transition temperature (58.08 and 91.44℃) than those of the single-crosslinking polymers. Thermogravimetric analysis results showed that these four curing polymers possessed good thermal stability, and the initial decomposition temperature of the polymers are all above 300℃.

Key words: dual-crosslinking, hemp oil, resin monomer, comprehensive properties

CLC Number: