Open Access Journal

International Science and Technology Journal

ISSN: 2519-9854 (Online)

ISSN: 2519-9846 (Print)

DOI: www.doi.org/10.62341/ISTJ

A peer-reviewed and open access journal concerned with publishing researches and studies in the field of applied sciences and engineering

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The effect of cooling profile on the of crystallization behaviour of polyethylene blends

Researcher(s):
  • Muhamed Sweed
  • Abduelmaged Abduallah
  • Osama Bshina
  • Peter Mallon
Institution:Sabratha University - Libya
Zawia University- libya
Zawia university - libya
University of Stellenbosch- South Africa
Field:الهندسة الكيميائية و هندسة النفط و الغاز
Published in:20th volume - December 2019
الملخص
هذه الورقة تناقش تأثير معدل التبريد cooling rate على عملية البلورة او التبلور Crystallization لعدد من البوليمرات وذلك بإستخدام عدد من تقنيات الفصل مثل TREF و CRYSTAF ، ايضاً دراسة التأثير الحراري بواسطة . DSC . الدراسة ساهمت بشكل كبير في معرفة اطوار البلورة داخل خليط البولي اثيلين، والذي يظهر تأثير معدل التبريد بشكل كبير على طور Co-crystal اثناء عملية التبلر (البلورة)
Abstract
This paper focusess on the effect of cooling profile on the crystallization behaviour of polyethylene blends, and how by varying the crystallization conditions the co-crystallization region will change. Temperature rising elution fractionation (TREF) technique was used for fractionate the polymers and blends. Each of the TREF fractions was studied using both Differential scanning calorimetry (DSC) and Crystallization Analysis Fractionation (CRYSTAF) to determine whether the fraction contained both types of materials. It is shown that the difference in the crystallization fractionation mechanisms between DSC, CRYSTAF and TREF can be exploited to study co-crystallization effects in polyethylene blends. Results also show that by varying the heating and cooling profiles in DSC and CRYSTAF, the co-crystallization fractions will be a single fraction or as two separate fractions. The results show a unique visual illustration of any co-crystallization regions in the blends as well as how much the crystallization conditions effect the blend crystallization