4.7 Article

Partial depolymerization of hydroxypropylmethyl cellulose for production of low molar mass polymer chains

期刊

CARBOHYDRATE POLYMERS
卷 229, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2019.115461

关键词

Hydroxypropylmethyl cellulose; HPMC; Endoglucanase; Controlled polymer; Low molar mass polymer

资金

  1. Institut Europeen des Membranes (IEM)

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Low molar mass (LMM) biopolymers are highly required to design functional nanomaterials, which mainly find application in biomedical fields. However, the synthesis of LMM polymer is a challenging task. In this work, we report a partial enzymatic depolymerization process which allows to produce a series of LMM hydroxypropylmethyl cellulose (HPMC) polymer, with a weight average molar mass (M-w) under and over 10,000 g mol(-1) and low dispersity (D < 1.5). Variation of the starting HPMC grade, reaction time, and enzyme concentration were the key parameters to control the M-w and yield of the target molecules. This approach provides a versatile way of producing LMM HPMCs with varying degrees of substitution, and having a single reactive aldehyde function at one chain extremity. LMM HPMC can find for instance application as building blocks for the development of new functional molecular architectures.

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