期刊
CARBOHYDRATE POLYMERS
卷 71, 期 4, 页码 614-625出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2007.07.006
关键词
radical graft polymerization; solid phase reaction; cellulose; allyl monomer
Cotton cellulose was successfully functionalized via a free radical graft polymerization process. Potassium persulfate served as an effective water soluble radical initiator to generate cellulosic radicals. The polymeric radicals could react with allyl monomers such as allyl-dimethylhydantion (ADMH) to form surface grafted cellulose. The reaction sites generated by potassium persulfate were probably at carbon 3 and 4 in glucose ring via oxidative hydrogen abstraction. The cellulosic radicals can initiate grafting polymerization of ADMH with a maximum polymerization degree of about 12 based on LC-MS results. The radical graft polymerization mechanisms were proposed based on LC-ESI/MS analysis. The ideal covalent bonding between cellulose and poly (allyl-dimethylhydantion) (PADMH) ensured permanent graft of the monomers on cotton and durability of the expected functions on the treated cotton. (c) 2007 Elsevier Ltd. All rights reserved.
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