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Investigation of the Reaction Mechanism of itaconic Acid/Maleic Acid Copolymer System and Cotton Cellulose

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Journal of China Textile University(English Edition) 2000年第2期17卷 53-55页

作者：汪澜李卓 Zhejiang Inst of Science and Technology Hangzhou China

The reaction mechanism of IA/MA copolymer system andcotton cellulose is conjectured and verified, the two keysteps, such as the formation of cyclic anhydride interme-diates and the building of ester crosslinklng, and the ef-fect of sodium hypophosphite are especially emphasized,by FT - IR spectroscopy and acid- base titration anal-yses. The experiments reveal that carboxylic acids *** change to cyclic anhydride in the pre - drying step andSodium Hypophosphite (SHP) has effect on it, but mostester - crosslinkages are built in the curing step and SHPhas effects on both anhydride formation and ester -crosslinking formation.

关键词： itaconic acid ( I A ) Maleic acid ( MA) Copol-ymer system FT - IR spectroscopy Acid - base titration .

Directional Breeding of High itaconic Acid Yielding Strain of <i>Aspergillus terreus</i>with a New Plate Technique

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Advances in Microbiology 2013年第4期3卷 376-381页

作者： Lingyun Wei Jianhua Wang Hezhi Zhou Wenbiao Jin Zhangli Hu Jiazuan Ni Key Laboratory for Green Chemical Process of Ministry of Education Wuhan Institute of Technology Wuhan China

itaconic acid is commercially produced by the cultivation of Aspergillus terreus using starch hydrolysate as carbon source. The degree of hydrolysis had a great influence on itaconic acid production which was suitable when corn starch was saccharified at 35 DE. The α-amylase was sufficient to drive the starch hydrolysis to the degree. The agar plate assay with LiCl treatment provided a rapid, simple and unequivocal method for screening large numbers of colonies for itaconic acid producing strains. It was learned by experience that the strains on the plates with thick hyphae and light-colored spores often accompanied high itaconic acid production. A strain, designated Ast165, producing itaconic acid with a high yield, was successfully obtained by directional breeding of metabolic end products resistant strains. The itaconic acid concentration produced by Ast165 was 53.8 g/l from 100 g/l of starch hydrolysate in shake flasks. The conversion rate was 61.3%, which was the highest value found in tests.

关键词： Aspergillus terreus itaconic Acid Corn Starch Dextrose Equivalent Enzymatic Hydrolysis

Preparation and Characterization of Functionalized Polypropylene with Acrylamide and itaconic Acid

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Journal of Materials Science and Chemical Engineering 2014年第10期2卷 43-51页

作者： A. R. Oromiehie H. Ebadi-Dehaghani K. Ansari K. Karimi Z. Rahmani S. Mirbagheri Iran Polymer and Petrochemical Institute Tehran Iran Shahreza Branch Islamic Azad University Shahreza Iran

Functionalized polypropylene with acryl amide (AAm) and itaconic acid (IA) were prepared in the molten state in the presence of dicumyl peroxide. The effects of the concentration of both mono- mers on the degree of functionalization and properties of the products were investigated by FT-IR, contact angle measurement and DSC analysis. It was found that the degree of functionalization depends on the initial concentration of both monomers that used in the reaction. The influence of the AAm and IA content on the melting and crystallization temperature of PP was investigated by DSC. The contact angle of water on film surfaces of the functionalized PP (PP-g-AAm and PP-g-IA) decreased with increasing modified polymer content. From FT-IR spectra of functionalized PP a calculation was made of carbonyl index on the films surfaces. It was found that the higher intensity of the carbonyl index, the lower contact angle value and the lower crystallinity confirmed the ex- istence of functionalized AAm and/or IA in PP. It was concluded from the different characteriza- tion methods that the polarity and percentage of functionalized PP were increased up to 3 phr for both monomers, and then it was decreased by increasing the amount of monomers and had a threshold value, due to nucleating agents of monomers in PP.

关键词： Functionalized Polypropylene Acryl Amide itaconic Acid FT-IR Contact Angle

Kinetics of Maleic Acid/itaconic Acid In-situ Polymerization on Cotton

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Journal of Donghua University(English Edition) 2002年第2期19卷 30-32页

作者：赵敏周翔张春珠 College of Chemistry and Chemical Engineering Dong Hua University Shanghai 200051

Cotton fabric samples are padded with maleic acid (MA) and itaconic acid (IA) finishing bath in the presence of potassium persulfate (K 2S 2O 8), and then dried at different temperatures for different time intervals. The portion of unreacted monomers on cotton fabric samples is determined by means of measuring the double bond content. The kinetic data (rate constants, Arrhenius activation energy, frequency factor) of the in-situ polymerization have been calculated.

关键词： cotton fabric, crosslinking , durable press finishing,maleic acid, itaconic acid.

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衣康酸及其衍生产品的开发和应用

染整技术 2014年第6期36卷 46-49页

作者：孙永泰辽宁沈阳辽中水利化工设备厂辽宁沈阳110200

简述了衣康酸的国内外概况、生产方法,并为促进我国衣康酸工业的健康发展,介绍了其深加工产品的生产和应用。

关键词：衣康酸(亚甲基丁二酸) 生产应用 itaconic acid (methylenesuccinic acid)