TEMPO修饰酶解淀粉的制备及其表面施胶

doi:10.3969/j.issn.1000-2006.2013.01.020

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南京林业大学学报（自然科学版） ›› 2013, Vol. 37 ›› Issue (01): 111-116.doi: 10.3969/j.issn.1000-2006.2013.01.020

TEMPO修饰酶解淀粉的制备及其表面施胶

张玉娟, 毛圣陶, 王晶晶, 戴红旗^*

南京林业大学, 江苏省制浆造纸科学与技术重点实验室,江苏南京 210037

出版日期:2013-02-18 发布日期:2013-02-18
基金资助:
收稿日期:2012-02-23 修回日期:2012-07-19
基金项目:江苏高校优势学科建设工程资助项目(PAPD)
第一作者:张玉娟,硕士生。*通信作者:戴红旗,教授。E-mail: daihq@vip.sina.com。
引文格式:张玉娟,毛圣陶,王晶晶,等. TEMPO修饰酶解淀粉的制备及其表面施胶[J]. 南京林业大学学报:自然科学版,2013,37(1):111-116.

Preparation of enzymatic starch modified by TEMPO oxidation and its application on surface sizing

ZHANG Yujuan,MAO Shengtao,WANG Jingjing, DAI Hongqi^*

Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University,Nanjing 210037, China

Online:2013-02-18 Published:2013-02-18

摘要/Abstract

摘要： 原淀粉经α-淀粉酶处理,再以2,2,6,6-四甲基哌啶-1-氧自由基(TEMPO)氧化体系氧化酶解,利用TEMPO对伯醇羟基选择性氧化作用,将酶解淀粉分子链上的部分醇羟基氧化成羧基,得到水溶性好、黏度低的改性淀粉,并用于纸张表面施胶。研究结果表明,酶解淀粉经TEMPO氧化改性后用于纸张表面施胶,对纸张抗张强度和表面强度的增强效果优于商品氧化淀粉,但耐折性能下降明显。在次氯酸钠用量为2 mmol/g时,改性淀粉的羧基含量达5.1%,将此改性淀粉以4 g/m²的施胶量对纸张进行表面施胶,纸张的抗张强度比未施胶纸张增大51.6%。

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.

中图分类号:

TS727

张玉娟,毛圣陶,王晶晶,等. TEMPO修饰酶解淀粉的制备及其表面施胶[J]. 南京林业大学学报（自然科学版）, 2013, 37(01): 111-116.

ZHANG Yujuan,MAO Shengtao,WANG Jingjing, DAI Hongqi. Preparation of enzymatic starch modified by TEMPO oxidation and its application on surface sizing[J].Journal of Nanjing Forestry University (Natural Science Edition), 2013, 37(01): 111-116.DOI: 10.3969/j.issn.1000-2006.2013.01.020.

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TEMPO修饰酶解淀粉的制备及其表面施胶

Preparation of enzymatic starch modified by TEMPO oxidation and its application on surface sizing

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