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Chemistry and Industry of Forest Products ›› 2016, Vol. 36 ›› Issue (2): 87-93.doi: 10.3969/j.issn.0253-2417.2016.02.013

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Synthesis and Characterization of Dehydroabietic Acid Derived ATRP Initiator

YU Juan1,2, WANG Li-jun1,2, LIU Shao-feng1,2, WANG Chun-peng1,2, WANG Ji-fu1,2, CHU Fu-xiang1,2   

  1. 1. Institute of Chemical Industry of Forestry 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. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2015-03-19 Online:2016-04-25 Published:2016-04-26

Abstract: Dehydroabietic acid derived ATRP initiator, dehydroabietic acid (2-isobutyric acid bromide) ethyl ester of (DA-2-iBBrEH), was synthesized by esterification of 2-bromoisobutyryl bromide (2-BiBr) and dehydroabietic acid 2-hydroxyethyl ester (DA-EH) which was obtained from the reaction of ethylene glycol (EG) and dehydroabietic chloride(DA-Cl) with dehydroabietic acid as raw material. Single-factor experiments were employed to investigate the effects of reaction conditions on the preparation of DA-EH and DA-2-iBBrEH. The results showed that the optimized conditions of DA-EH preparation were summarized as 4-dimethyaminopyridine (DMAP) using for catalyst,n(DA-Cl):n(EG):n(DMAP)=1:5:5, reaction time 5 h and reaction temperature 50 ℃. The optimized reaction ratio and catalyst of the preparation of DA-2-iBBrEH were n(DA-EH):n(2-BiBr):n(DMAP)=1:2:2 and DMAP, respectively. Then the resulting products were characterized by FT-IR, 1H NMR and 13C NMR. Subsequently, poly(methyl methacryalte)(PMMA) was prepared using DA-2-iBBrEH as initiator. The GPC results showed that the molecular weight of PMMA was about 8 500 and PDI was 1.3. This indicated that DA-2-iBBrEH was a good ATRP initiator.

Key words: dehydroabietic acid, ATRP initiator, synthesis

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