عنوان المقالة: Synthesis, Structure and Properties of Polymer Nanocomposites
د. المهدي محمد المكي | Dr. Mahdi Mohammed Almaky | 9993
- نوع النشر
- مؤتمر علمي
- المؤلفون بالعربي
- المؤلفون بالإنجليزي
- M. Khlifa* , A. Youssef, A. F. Zaed, M. Almakki
- الملخص الانجليزي
- A series of styrene–acrylonitrile (SAN) copolymer nanoparticles were prepared by grafting styrene–acrylonitrile from both aggregated silica and colloidally dispersed silica nanoparticles using atom-transfer radical polymerisation (ATRP) in mini emulsion system. The grafted polymer silica nanoparticles were characterised using transmission electron microscopy (TEM), and gel permeation chromatography (GPC).The thermal and physical ageing behaviour of the nanocomposites have been examined by differential scanning calorimetry (DSC).The addition of silica nanoparticles to PSAN can influence its thermal and aging properties. Grafting PSAN-aggregated silica revealed considerable in- crease in the glass transition temperature, whereas colloidally silica nanoparticles showed only a marginal improvement. Additionally, while dispersing PSAN in colloidal and aggregated silica accelerated physical ageing, grafting to aggregated silica significantly reduced ageing rates.
- تاريخ النشر
- 25/01/2016
- الناشر
- ICCPGE 2016
- رقم المجلد
- رقم العدد
- الصفحات
- 25 -30
- رابط خارجي
- https://scholar.google.com/citations?user=biED6sgAAAAJ&hl=ar#d=gs_md_cita-d&u=%2Fcitations%3Fview_op%3Dview_citation%26hl%3Dar%26user%3DbiED6sgAAAAJ%26citation_for_view%3DbiED6sgAAAAJ%3AqjMakFHDy7sC%26tzom%3D-120
- الكلمات المفتاحية
- Poly (styrene-co-acrylonitrile); silica nanoparticles; physical ageing