کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1386038 1500653 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermoplasticization of euglenoid β-1,3-glucans by mixed esterification
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Thermoplasticization of euglenoid β-1,3-glucans by mixed esterification
چکیده انگلیسی


• Thermoplastics made from paramylon as a main component were prepared.
• Euglenoid constitution ratio of plastics theoretically rises to as high as 70%.
• Creation of thermoplastics hinges on mixed esterification.
• Thermoplastics are of practical use in terms of thermal and mechanical properties.

We experimentally demonstrated that paramylon, a storage polysaccharide of Euglena gracilis, is efficiently thermoplasticized by adding acyl groups that differ in alkyl chain length. Glass transition temperature of mixed paramylon esters was higher than those of plant-based polylactic acid (PLA), poly 11-aminoundecanoic acid (PA11), and petroleum-based acrylonitrile-butadiene-styrene (ABS) resin and was comparable to that of cellulose acetate stearate (CAS). Their thermoplasticity was equivalent to or higher than those of these reference plastics. The bending strength and bending elastic modulus of injection molded test specimens made from mixed paramylon esters were comparable to those of the reference plastics. While their impact strength was lower than that of specimens made from ABS resin and CAS, it was comparable to those of PLA and PA11. Euglenoid β-1,3-glucans are thus a potential component of thermoplastic materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 105, 25 May 2014, Pages 90–96
نویسندگان
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