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The Use of Epoxy Silanes on Montmorillonite: An Effective Way to Improve Thermal and Rheological Properties of PLAMMT Nanocomposites Obtained via “In Situ” Polymerization
المؤلفون المشاركون
Sabatini, Valentina
Farina, Hermes
Basilissi, Luca
Di Silvestro, Giuseppe
Ortenzi, Marco A.
المصدر
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-16، 16ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-07-13
دولة النشر
مصر
عدد الصفحات
16
التخصصات الرئيسية
الملخص EN
Polylactic acid (PLA) nanocomposites were prepared via “in situ” ring opening polymerization (ROP) of lactide using a montmorillonite, Cloisite 15A, employed after surface treatment with 3-Glycidoxypropyltrimethoxysilane.
The dispersion of the nanoparticles was checked using Wide Angle X-Ray Scattering (WAXS) and Transmission Electron Microscopy (TEM); both the effects of different amounts of montmorillonite and silane were measured on molecular weights and on thermal and rheological properties, using Size Exclusion Chromatography (SEC), Differential Scanning Calorimetry (DSC), thermogravimetric analyses (TGA), and rheological analyses.
It was found that even very low amounts (0.1% w/w) of nanoparticles greatly affect nanocomposites properties.
Unmodified montmorillonite tends to decrease molecular weights, deactivating the catalytic system used for ROP of lactide, but when epoxy silane is present molecular weights increase.
Melt crystallization temperatures increase with modified nanoparticles, which enhance crystallization process.
TGA analyses show that when pure montmorillonite is present, nanocomposites have lower thermal stability with respect to standard PLA; when silane is used thermal stability can get much higher than standard PLA as silane content increases.
The rheological behaviour of nanocomposites shows that melt viscosity is far higher than that of standard PLA at low shear rates and also a marked shear thinning behaviour can be achieved.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Sabatini, Valentina& Farina, Hermes& Basilissi, Luca& Di Silvestro, Giuseppe& Ortenzi, Marco A.. 2015. The Use of Epoxy Silanes on Montmorillonite: An Effective Way to Improve Thermal and Rheological Properties of PLAMMT Nanocomposites Obtained via “In Situ” Polymerization. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-16.
https://search.emarefa.net/detail/BIM-1069007
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Sabatini, Valentina…[et al.]. The Use of Epoxy Silanes on Montmorillonite: An Effective Way to Improve Thermal and Rheological Properties of PLAMMT Nanocomposites Obtained via “In Situ” Polymerization. Journal of Nanomaterials No. 2015 (2015), pp.1-16.
https://search.emarefa.net/detail/BIM-1069007
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Sabatini, Valentina& Farina, Hermes& Basilissi, Luca& Di Silvestro, Giuseppe& Ortenzi, Marco A.. The Use of Epoxy Silanes on Montmorillonite: An Effective Way to Improve Thermal and Rheological Properties of PLAMMT Nanocomposites Obtained via “In Situ” Polymerization. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-16.
https://search.emarefa.net/detail/BIM-1069007
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1069007
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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