研究了漆酶催化黄麻木质纤维接枝过渡单体丁子香酚，然后在漆酶/t-BHP 催化下，在丁子香酚上进一步接枝丙烯酰胺的亲水化改性反应.结果表明，黄麻纤维接枝丁子香酚的 XPS 分峰图上观察到283．49 eV 处存在 C=C 的能谱峰，证明丁子香酚接枝到了黄麻纤维表面；溴量法测得在50℃、pH 值＝4、丁子香酚浓度5 mmol/L、漆酶用量1．68 U/mL 条件下反应4 h 接枝过渡单体效果最好，接枝率为1．06％.在黄麻纤维桥接丁子香酚接枝丙烯酰胺的红外光谱图上呈现酰胺基团的红外特征吸收峰，说明黄麻纤维表面成功接枝丙烯酰胺；微量凯氏定氮法测得黄麻纤维桥接丁子香酚接枝丙烯酰胺的接枝率为3．66％.
Enzymatic processes provide new perspectives for the hydrophilization modification of jute lignocellu-losic fiber.First,eugenol as an intermediate monomer was grafted to the lignin-rich jute fabric catalyzed by lac-case.Then,further grafting polymerization of acrylamide to the eugenol-bridged jute mediated by laccase/tert-butyl hydroperoxide (t-BHP)was investigated in this study.The results showed that eugenol could be grafted to the surface of jute via the catalysis of laccase and the C1s peak of C=C was observed at 283.49 eV in XPS spectra.The best grafting conditions measured by a bromine method were 50 ℃,pH was 4,4 h,eugenol con-centration of 5 mmol/L,laccase dosage of 1.68 U/mL for grafting rate of 1.06%.FT-IR spectrum of acrylam-ide-grafted eugenol-bridged jute showed obvious characteristic peaks of amide groups,which revealed the exist-ence of grafted acrylamides on the jute fibers.The grafting rate of acrylamide onto the jute fiber was 3.66% de-termined by the micro kjeldahl method.
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