【摘 要】
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A novel polymer containing the sucrose group was synthesized by radical polymerization from an enzymaticallyprepared monomer, 1′-O-vinyladipoyl-sucrose (VAS).
【机 构】
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Department of Chemistry
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A novel polymer containing the sucrose group was synthesized by radical polymerization from an enzymaticallyprepared monomer, 1′-O-vinyladipoyl-sucrose (VAS). Transesterification reaction of sucrose with divinyl adipate inanhydrous pyridine catalyzed by an alkaline protease from Bacillus subtilis at 60℃ for 7 days gave VAS (yield 55%) withoutany blocking/deblocking steps. The vinyl sucrose ester could be polymerized with potassium persulfate and H2O2 as initiatorto give poly(1′-O-vinyladipoyl-sucrose) with Mn ＝ 33,000 and Mw ＝ 53,200, Mw/Mn ＝ 1.61. The polymer was biodegradable.After 6 days in aqueous buffer (pH 7), this alkaline protease could degrade poly(1′-O-vinyladipoyl-sucrose) to Mn of ca.1080, Mw/Mn ＝ 3.30 (37℃), and Mn of ca. 5200, Mw/Mn ＝ 2.44 (4℃). The polymer containing the sucrose branch would be afunctional material in various application fields.
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