کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4512114 1624821 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biodegradable bioepoxy resins based on epoxidized natural oil (cottonseed & algae) cured with citric and tartaric acids through solution polymerization: A renewable approach
ترجمه فارسی عنوان
رزین های بیوپسکوئیدی قابل تجزیه بر اساس روغن طبیعی اپوکساید شده (پنبه دانه و جلبک) از طریق پلیمریزاسیون محلول درمان شده با اسید سیتریک و ترش: یک رویکرد تجدید پذیر
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی


• Biodegradable bioepoxy resins prepared from natural oils (cottonseed and algae) as a natural sustainable resource.
• Bioepoxy resins have thermal stability comparable with petroleum epoxy resin.
• Natural oil based bioepoxy resins are completely biodegradable.

Biodegradable bioepoxy resins were prepared from epoxidized cottonseed oil (ECO) and algae oil (EAO). CO and AO were epoxidized using the environmentally benign reagent hydrogen peroxide in quantitative yield. The bioepoxy resins were obtained on reaction of ECO and EAO with citric acid (COCA/AOCA) and tartaric acid (COTA/AOTA) respectively. Bioepoxy resins were characterized for their solution viscosity, molecular weight distribution, thermal behaviour, tensile strength and resistance to the chemical factors test. Bioepoxy resins were soluble in alkali solution (1 M) and resistant to most of the organic solvents. The thermal properties were determined by thermogravimetric analysis and differential scanning calorimetry. Thermal stability and chemical resistivity tests of bioepoxy resins were compared with the petroleum-based epoxy resin (P-epoxy and P-epoxy 1). The results indicated higher thermal stability of bioepoxy resins compared to both P-epoxy and P-epoxy 1. The biodegradation tests of COCA, COTA, AOCA and AOTA were conducted under identical conditions and the results demonstrated that COCA was degraded up to 92% in 24 days and COTA was 87% degraded in 56 days similarly AOCA decomposed completely in 90 days and AOTA decomposed in almost 240 days by bacterial consortium. The larvicidal property of bioepoxy resins was studied against mosquito larvae. Assays revealed that the average toxicity of COCA was 68% in 48 h while the COTA was less toxic and causes 46% mortality in 48 h. Similarly AOCA was found to be toxic against larvae and causes 20% mortality in 48 h while the AOTA was not found to be effective against larvae whereas P-epoxy has 100% mortality in 24 h. Seed germination was tested in bioepoxy resins using black eyed pea. Bioepoxy resins supported seed germination.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 89, 30 October 2016, Pages 434–447
نویسندگان
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