عرض تفاصيل البحث

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عنوان البحث
Thermal Mechanical And Morphological Characterisations Of Graphene Nanoplatelet Graphene Oxide High Hard Segment Polyurethane Nanocomposite A Comparative Study
عنوان المجلة
Polymers
ISSN-2029-2139
تفاصيل النشر
سنة النشر - 2022 / الفهرس الاصلي للمجلة - 14 : 19 (عدد الصفحات 11)
تصنيف البحث
هندسة كيمياوي - المجموعة الهندسية
رابط DOI
https://doi.org/10.3390/polym14194224
رابط البحث
فتح في موقع المجلة الرسمي
البحث والاستدامة
الهدف 3 – الصحة الجيدة والرفاه   المزيد حول هذا الهدف
البحث والمجتمع
نعم , يدعم
الكلمات المفتاحية
high hard segment polyurethane, graphene nanoplatelets, graphene oxide, nanocomposites, thermal stability, mechanical properties

اسم الباحثجهة الانتساببلد الباحث
Muayad Albozahid University of Babylon Iraq
Haneen Zuhair Naji University of Babylon Iraq

The current work investigates the effect of the addition of graphene nanoplatelets (GNPs) and graphene oxide (GO) to high hard-segment polyurethane (75% HS) on its thermal, morphological, and mechanical properties. Polyurethane (PU) and its nanocomposites were prepared with different ratios of GNP and GO (0.25, 0.5, and 0.75 wt.%). A thermal stability analysis demonstrated an enhancement in the thermal stability of PU with GNP and GO incorporated compared to pure PU. Differential Scanning Calorimetry (DSC) showed that both GNP and GO act as heterogeneous nucleation agents within a PU matrix, leading to an increase in the crystallinity of PU. The uniform dispersion and distribution of GNP and GO flakes in the PU matrix were confirmed by SEM and TEM. In terms of the mechanical properties of the PU nanocomposites, it was found that the interaction between PU and GO was better than that of GNP due to the functional groups on the GO’s surface. This leads to a significant increase in tensile strength for 0.5 wt.% GNP and GO compared with pure PU. This can be attributed to interfacial interaction between the GO and PU chains, resulting in an improvement in stress transferring from the matrix to the filler and vice versa. This work sheds light on the understanding of the interactions between graphene-based fillers and their influence on the mechanical properties of PU nanocomposites.