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|Table of Contents|

TEMPO修饰酶解淀粉的制备及其表面施胶(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2013年01期
Page:
111-116
Column:
研究论文
publishdate:
2013-01-15

Article Info:/Info

Title:
Preparation of enzymatic starch modified by TEMPO oxidation and its application on surface sizing
Author(s):
ZHANG YujuanMAO ShengtaoWANG Jingjing DAI Hongqi*
Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University,Nanjing 210037, China
Keywords:
native starch enzymatic hydrolysis TEMPO oxidation surface sizing
Classification number :
TS727
DOI:
10.3969/j.issn.1000-2006.2013.01.020
Document Code:
A
Abstract:
Native starch was hydrolyzed by α-amylase in order to reduce the starch molecular weight. Enzymatic starch oxidized by 2,2,6,6-tetramethyl-piperidine-1-oxygen free radical(TEMPO)which had the selective oxidation to primary alcoholic hydroxyl and got containing carboxyl groups modified starch the properties of good water solubility, low viscosity to use in paper surface sizing. The results showed that the modified starch obtained by enzymatic hydrolysis and TEMPO oxidation was better effects in paper tensile strength and surface strength enhancement than commercial oxidized starch, but the folding endurance of paper decreased obviously. With the usage of sizing agent at the weight of 4 g/m2, the tensile and modified starch surface sizing sheet which contains 5.1% carboxyl at the dosage of oxidant NaClO 2 mmol/g rose about 51.6% compared with the sizing-free sheets.

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Last Update: 2013-01-15