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Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (2): 39-45.doi: 10.3969/j.issn.0253-2417.2019.02.006

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Preparation of Monodisperse Rosin-based Polymer Microspheres by Dispersion Polymerization

Zenghui CHENG1,2(),Daihui ZHANG1,Jifu WANG1,Chunpeng WANG1,Fuxiang CHU1,*(),Feng XU2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
    2. College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
  • Received:2018-12-27 Online:2019-04-25 Published:2019-05-08
  • Contact: Fuxiang CHU E-mail:chengzenghuia@163.com;chufuxiang@caf.ac.cn
  • 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(CAFYBB2017ZF003)

Abstract:

A new type of monodisperse microspheres consisted of poly (2-methacryloyloxyisopropanol ester of dehydroabietic acid) PDAGMA was prepared via dispersion polymerization in the presence of isopropyl alcohol/H2O, using 2-methacryloyloxyisopropanol ester of dehydroabietic acid (DAGMA) as a monomer, polyvinylpyrrolidone(PVP) as stabilizer, 2, 2′-azobis (2-methylpropionitrile) (AIBN) as an initiator. The influences of PVP content, monomer concentration and reaction temperature on the particle size and distribution of microspheres were investigated. Then, these microspheres were crosslined and bed used as an adsorption material. And the rutin adsorption performance was also investigated. FT-IR, 1H NMR, GPC and SEM were applied to characterize the structure, morphology and size of the microspheres, respectively. The results showed that the DAGMA monomer could polymerized in the alcohol/water medium. GPC analysis showed that the relative molecular weight of the polymer was about 55 000. The average diameter of the polymer microsphere was found to decrease with the increase of the amount of PVP. The polymer microsphere particle size decreased frist and then increased as the monomer concentration increased, as the reaction temperature increased, the polymer microsphere particle size also increased. By the optimize the polymerization techmology, monodispersed microspheres with particle size 1.37 μm and PDI 1.014 were obtained. Specially, the cross-linked rosin polymer microspheres exhibited an improved thermal stability and the adsorption capacity of rutin was 12.3 mg/g.

Key words: dispersion polymerization, rosin, polymer microspheres

CLC Number: