Academic Journal
Structure and conditioning effect on mechanical behavior of poly(vinyl alcohol)/calcium lactate biocomposites
العنوان: | Structure and conditioning effect on mechanical behavior of poly(vinyl alcohol)/calcium lactate biocomposites |
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المؤلفون: | Sedlarik, Vladimír, Galya, Tsermaa, Emri, Igor, Saha, Petr |
المساهمون: | Ministry of Education, Youth and Sports of the Czech Republic, Ministry of Industry and Trade of the Czech Republic |
المصدر: | Polymer Composites ; volume 30, issue 8, page 1158-1165 ; ISSN 0272-8397 1548-0569 |
بيانات النشر: | Wiley |
سنة النشر: | 2008 |
المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
الوصف: | The structural and mechanical characteristics of polymeric biocomposites based on calcium lactate (CL) and either partially (88 mol%) or fully (98 mol%) hydrolyzed poly(vinyl alcohol) (PVA) were studied using optical microscopy, Fourier transform infrared spectroscopy equipped with attenuated total reflectance accessory, water content determination, and differential scanning calorimetry. In addition, the moisture absorption effect on the mechanical properties of the biocomposites was tested in this work. The results reveal that CL is a suitable modifier for both types of PVA. However, a more efficient enhancement of uniform shape and size distribution of CL particles within the PVA matrix was noticed in fully hydrolyzed matrix at low water contents. It is in agreement with glass transition temperature's observations. The samples conditioned at 50% of relative humidity (RH) showed decrease in E modulus and tensile strength in comparison with the material stored below 20% RH. Nevertheless, the enhancement of tensile properties, because of the modification with CL, was still noticeable especially for the partially hydrolyzed PVA‐based biocomposites. The optimum concentration of the modifier was estimated on the basis of the obtained results. POLYM. COMPOS., 2009. © 2008 Society of Plastics Engineers |
نوع الوثيقة: | article in journal/newspaper |
اللغة: | English |
DOI: | 10.1002/pc.20672 |
DOI: | 10.1002/pc.20672/fullpdf |
الاتاحة: | http://dx.doi.org/10.1002/pc.20672 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fpc.20672 http://onlinelibrary.wiley.com/wol1/doi/10.1002/pc.20672/fullpdf |
Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
رقم الانضمام: | edsbas.36FFF444 |
قاعدة البيانات: | BASE |
DOI: | 10.1002/pc.20672 |
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