Effects of divinylbenzene‐maleic anhydride copolymer hollow microspheres on crystallization behaviors, mechanical properties and heat resistance of poly(l‐lactide acid)

2019 ◽  
Vol 31 (4) ◽  
pp. 817-826
Author(s):  
Hu Qiao ◽  
Jia Guo ◽  
Li Wang ◽  
Jun Sun ◽  
Shengling Jiang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Heat Resistance ◽  
Hollow Microspheres ◽  
Crystallization Behaviors ◽  
Maleic Anhydride Copolymer

Effect of Tetradecyl Methyl Acrylate-Maleic Anhydride Copolymer on the Mechanical Properties of Glass Mat Reinforced Polypropylene Composites

2005 ◽  
Vol 13 (4) ◽  
pp. 403-413
Author(s):  
Shanhua Zhou ◽  
Zhiyu Xu ◽  
Xin Liu ◽  
Yan Gao ◽  
Qingzhi Dong
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Impact Strength ◽  
Flexural Strength ◽  
Polypropylene Composites ◽  
Monomer Ratio ◽  
Maleic Anhydride Copolymer ◽  
Glass Mat ◽  
The Impact ◽  
Interfacial Modifier

A new interfacial modifier made of tetradecyl methylacrylate-maleic anhydride copolymer (TMA- co-MAH) was prepared and characterized. The effect of reaction time and monomer ratio on the gross conversion and MAH content in the copolymer was studied. When the glass mat was treated with TMA- co-MAH solutions and compounded with PP, the MAH group of the interfacial modifier formed strong interactions with the glass mat and the long side chain of the interfacial modifier entangled firmly with the polypropylene matrix. In comparison with maleated polyolefins, the higher MAH content of the TMA- co-MAH resulted in better interfacial adhesion between the PP and the glass mat resulting in increased flexural strength and modulus, and the ductility of the TMA- co-MAH introduced a ductile interlayer into the interface of the glass mat reinforced polypropylene composites (GMT-PPs) to achieve higher impact strength. Therefore the mechanical properties of composites treated with TMA- co-MAH were all superior to those of GMT-PPs treated with maleic anhydride grafted polypropylene (PP- g-MAH) solutions when they were used at the same level. The effects of anhydride content, concentration of copolymer and compounding time on the mechanical property of GMT-PPs were investigated. With the optimal monomer ratio, MAH:TMA = 7:3, a 3% copolymer solution and a compounding time of 5 min, the impact strength, flexural strength and modulus of GMT-PPs treated with the new interfacial modifier were all improved significantly compared with composites treated with 0.3% PP- g-MAH solution.

Research of Synthesis and Heat Resistance on Lactic Acid-Styrene-Maleic Anhydride Copolymer

2013 ◽  
Vol 772 ◽  
pp. 25-29
Author(s):  
Jian Jiang Shang ◽  
Li Na Jiang ◽  
De Qiang Li ◽  
Xiao Yan Zhu
Keyword(s):  
Lactic Acid ◽  
Maleic Anhydride ◽  
Heat Resistance ◽  
Polymerization Process ◽  
Scanning Calorimetry ◽  
Thermo Gravimetric ◽  
Thermo Gravimetric Analyzer ◽  
Melt Copolymerization ◽  
Styrene Maleic Anhydride ◽  
Maleic Anhydride Copolymer

The polymerization process and heat resistance of lactic acid-styrene-maleic anhydride copolymer was studied. Lactic acid-polystyrene-maleic anhydride copolymer was prepared with styrene, maleic anhydride and lactic acid by melt copolymerization. Its structure was characterized by Infrared Spectrum (IR), and the thermal properties were tested by Differential Scanning Calorimetry (DSC) and Thermo Gravimetric Analyzer (TGA). The paper research on the effect of the proportion of different monomer and the polymerization process on the heat resistance mainly. The optimum conditions for the synthesis were determined by means of experiment: the content of catalyst was 0.5(wt%), the ratio of styrene-maleic anhydride and lactic was 0.6g/10g, at 170 °C. for 5 h. The results showed that the glass transition temperature (Tg) of the copolymer increased by 26.0°C.and the 5% weight-loss temperature of it increased by 25.0°C compared with pure polylactic acid.

scholarly journals Remarkable Role of Experimental Olefin-Maleic-Anhydride Copolymer Based Compatibilizing Additives in Blends of Waste PET Bottles and Polyamide

2020 ◽  
Author(s):  
B. Nagy ◽  
C. S. Varga ◽  
K. Kontos ◽  
L. Simon-Stőger
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Polymer Blends ◽  
Rheological Behaviour ◽  
Elongation At Break ◽  
Pet Bottles ◽  
Maleic Anhydride Copolymer ◽  
Waste Polymer ◽  
Outstanding Result ◽  
The Eu

Abstract Over the past 50 years demand for plastics drastically increased worldwide resulting in plastic wastes causing serious environmental problems. The main market sector of European plastics industry is the packaging industry most of which are polyolefins and poly(ethylene-terephtalate). In the EU, 29.1 million tonnes of plastic waste were collected in 2018, of which 32.5% was recycled, 42.6% was recovered for energy, and 24.9% was landfilled (Plastics-the Facts, 2019). Although landfilling of collected waste in the EU is steadily declining, there is still too much unused waste. Polymer blends based on waste resources can solve the issues of recycling. The main purpose of the research was to produce polymer blends from waste based PET that have appropriate mechanical properties and rheological behaviour as well in order to find application areas where product requirements are not strict. Blends containing waste based PET were extrusion moulded and calenderd producing extrusion strings and films. Rheological and tensile properties of three types of PET/engineering thermoplastic blends (PET/PC, PET/PA and PET/ABS) were studied. Miscibility of components of the blends is limited leading to weak mechanical properties such as low tensile strength and/or elongation at break. Due to that phenomenon compatibilizing additives are also required. As compatibilizing additives olefin-maleic-anhydride copolymer based additives have been used in our experiments. Structure of additives differed from each other both in ratio and length of carbon chains of compounds linked to maleic-anhydride groups. Blends have been studied with PET content ranging from 10 to 90%. As an outstanding result improving of mechanical properties was achieved, for example almost 40% growth was observed in elongation at break of extruded 80/20 PET/PA blends in the presence of 0.2% compatibilizing additive compared to the sample without additive, meanwhile its strength has also improved. Graphic Abstract

scholarly journals Enhancing properties of PC/PA blends via compatibilization of olefin-maleic-anhydride copolymer based additives in masterbatch form

2021 ◽  
Vol 28 (8) ◽  
Author(s):  
T. Kovács ◽  
L. Simon-Stőger ◽  
B. Heller ◽  
Cs. Varga
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Water Resistance ◽  
Raw Materials ◽  
Polymeric Materials ◽  
High Moisture ◽  
Polymer Blending ◽  
Ft Ir ◽  
Maleic Anhydride Copolymer ◽  
Ft Ir Spectroscopy

AbstractPolymer blending has been a simple and efficient way for designing and controlling the performance of polymeric materials using easily available types. Both polycarbonate and polyamide have excellent mechanical properties and thermal stability but their disadvantages such as limited chemical or water resistance can be eliminate by tailoring them. Main difficulties in processing of PC/PA blends are the poor compatibility and high moisture adsorption capacity of the two raw materials complicating processing and also deteriorating mechanical properties of the products. Compatibilizing additives such as olefin-maleic-anhydride copolymer based compounds used in the experimental work can help to overcome the abovementioned difficulties. To determine the processing conditions of the raw materials several drying temperatures have been tested and thermal degradation has been examined by FT-IR spectroscopy. Experimental compatibilizing additives based on an olefin-maleic-anhydride copolymer have been investigated to enhance mechanical properties of the blends prepared by extrusion moulding. Mechanical, rheological, SEM and FT-IR measurements have been performed and at least one additive has been found to be efficient in improving selected properties.

scholarly journals A Practical Manner To GTR Recycling in Waste HDPE/ABS

2021 ◽  
Author(s):  
Csilla Varga ◽  
Balázs Heller ◽  
Lilla Simon-Stőger ◽  
Éva Makó
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Acrylonitrile Butadiene Styrene ◽  
Mechanical Tests ◽  
X Ray Diffraction ◽  
Ground Tire Rubber ◽  
Industrial Practice ◽  
X Ray ◽  
Maleic Anhydride Copolymer ◽  
Butadiene Styrene

Abstract Waste high-density polyethylene (w-HDPE)/ acrylonitrile-butadiene-styrene (ABS)/ground tire rubber (GTR) have been melt blended by two-roll milling. Ternary blends of w-HDPE/ABS/GTR have been observed to be incompatible in the composition range studied which revealed in the deteriorated mechanical properties. Two main types of compatibilizers such as an olefin-maleic anhydride copolymer based one synthesized by the authors and a commercial maleic anhydride grafted polypropylene (MA-g-PP) have been chosen for enhancing compatibility between the components ergo the mechanical properties. For characterizing tensile and impact properties of the blends mechanical tests have been carried out besides the scanning electron microscopy (SEM), X-ray diffraction and Fourier transform infrared spectroscopy. The most advantageous result in industrial practice can be that the experimental additive allows to apply higher GTR concentration ergo gives the opportunity to recycle higher level of GTR.

The Synergy Effects of Styrene-Maleic Anhydride Copolymer and Epoxy Resin on Interface Adhesion of ABS/Short Glass Fiber Composites

2011 ◽  
Vol 415-417 ◽  
pp. 85-93 ◽  
Author(s):  
Jian Bing Guo ◽  
Bin Xue ◽  
Min He ◽  
Hui Ju Shao ◽  
Shu Hao Qin
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Fiber Composites ◽  
Interfacial Interaction ◽  
Glass Fiber Composites ◽  
Short Glass Fiber ◽  
Synergy Effects ◽  
Styrene Maleic Anhydride ◽  
Maleic Anhydride Copolymer ◽  
Short Glass

The effects of styrene-maleic anhydride copolymer (SMA) and epoxy resin (ER) on the interfacial interaction of Acrylonitrile-butadiene-styrene terpolymer/Short glass fiber composites were investigated by means of scanning electron microscopy (SEM), dynamic mechanical analysis (DMA), and mechanical properties. The experimental results demonstrate that SMA and ER could effectively improve interfacial interaction between the ABS and SGF. Based on SEM, good interfacial adhesion between ABS and SGF in ABS/SMA/ER/SGF and ABS/ER/SGF composites was observed. DMA results showed that SMA and ER decreased the glass transition temperature (Tg) and height of tanδ compared with ABS/SGF composites. The synergy effects of SMA and ER on the interface interaction was investigated. All results in this paper were consistent, and showed a good interaction between ABS and SGF, which was proven by the mechanical properties of the composites.

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