Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userPreparation and Properties of blends of polypropylene and Acrylonitril-Butadiene-Styrene with Thermoplastic Starch
تحضير و خصائص مزائج الأكريل نتريل – بوتاديين- ستيرين و البولي بروبيلن مع النشاء المتلدن حرارياً
1740
2 60
0
(
0
)
Added by
Damascus University ورقة بحثية
Publication date
2011
fields
Chemistry
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
درست في هذا العمل الخواص الريولوجية و الميكانيكية لمزائج الأكريل نتريل – بوتاديين – سـتيرين مع النشاء المتلدن حرارياً (TPS/ABS) و مـزائج البـولي بـروبلين مـع النـشاء المتلـدن حراريـاً (TPS/PP). تم تلدين النشاء باستخدام الغلسيرين، حضرت المزائج باستخدام بـاثق مخبـري أحـادي الحلزون. درست الخواص الريولوجية باستخدام مقياس اللزوجة الشعري. أما الخواص الميكانيكية فقـد عينت من خلال إجراء اختبارات الشد حيث تم تعيين كل من الإجهاد و الانفعال عند القطع و معامل يونـغ.
In the present work, the rheological and mechanical properties of polypropylene /thermoplastic starch (PP/TPS) and acrylonitril-butadienestyrene/ thermoplastic starch (ABS/TPS) blends were investigated. Starch was plasticized using glycerol, and blends were prepared using a laboratory scale with single screw extruder. Rheological properties of the prepared blends were determined using a capillary rheometer. Mechanical properties were studied in term of tensile tests, stress at break, strain at break and Young's modulus were determined.
References used
Liu, H. Xie, F. Yu, L. Chen, L. and Li, L. (2009). Thermal processing of starch-based polymers. Prog. Polym. Sci. 34, p. 1348-1368
Ma, X. F. Yu, J. G. and Wan, J. J. (2006). Urea and ethanolamine as a mixed plasticizer for thermoplastic starch. Carbohydr. Polym. 64, p. 267- 273
Ma, X. and Yu, J. (2004). The plasticizers containing amide groups for thermoplastic starch. Carbohydr. Polym. 57, p. 197-203
rate research
Read More
In this work, Rheological and mechanical properties of acrylonitrile –
butadiene – styrene/ corn starch composites (ABS/starch) were studied. The
composites were prepared using a laboratory scale single screw extruder.
Rheological properties were
determined using the single screw extruder, and
apparent shear rate (γ), apparent shear stress (τ), apparent viscosity (η), non-
Newtonian index (n) and flow activation energy at a constant shear rate (Eγ)
and constant shear stress (Eτ) were determined. Mechanical properties in term
of tensile tests were performed using Testometric M350-10KN, stress at break,
strain at break and Young's modulus were determined. Rheological results
showed that the composites are pseudo plastic in behavior, and the apparent
viscosity of the composites increases with increasing starch content above the
additive rule which indicates a partial compatibility in the composite, also it
was found that the flow activation energy of the composite increases with
increasing starch content. Also it was found that the activation energy value at
a constant shear stress is more than that at a constant shear rate. The
mechanical results showed that the strain at break of the composite decreases
sharply by the presence of starch, whereas the young's modulus increases with
increasing starch content.
The aim of this work is the preparation of a biodegradable polymeric blend
(LDPE/AD+S) to be used for eco-friendly packaging purposes. The polymer matrix
consists mainly of low density polyethylene( LDPE), starch (S), and low quantities of
additiv
es (AD) as compatibilizers. The additives are: maleic acid, acetic acid, benzoyl
peroxide, and zinc stearate. The polymer blend LDPE/AD+S was prepared by extrusion, in
three compositions according to the percentage of starch (15,20,40%). Then, films were
prepared from the blend by thermal hydraulic compression to study their microstructure by
optical microscopic at magnification of 055 The results showed that the starch granules
were homogeneously distributed within the polymer matrix, and the compatibility
additives played an important role in enhancing the microstructure of the prepared blends.
The results also indicate that the starch promotes the onset of the bioegradation process.
The present research aims at preparing and characterizing different formulations of SBR1712 rubber with different loading amounts of two inorganic fillers: conventional N330 carbon black, new nanometric aerosil 200 fumed silica and local micrometric volcanic tuff.
The aim of this work is to study the rheological and mechanical properties of Poly(lactic acid) and High density polyethylene and blends (PLA/HDPE) in the molten state with recpect to shear stress, temperature and blends compositions using brabender mixer.
يعد الميتانول و الإيتانول من أكثر المحلات شيوعاً، و بما أن درجة غليانها أقل من مئة
درجة مئوية فإنها تتطاير بشكل سريع. و على سبيل المثال، يستعمل الميتانول في تصنيع
الأصبغة و العقاقير و العطور.. و هو شديد السمية، لذلك من الضروري تطوير محسات لكشفه.
أ
ما غاز الأمونيا فهو من ملوثات الهواء و له مصادر كثيرة مثل صناعة الأسمدة و أنظمة
التبريد.. و من هنا أهمية كشفه.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
