scholarly journals Reinforcing and Toughening Modification of PPC/PBS blends with Epoxy Terminated Hyperbranched Polymers as Compatibilizer

2021 ◽  
Author(s):  
Xiaolong Han ◽  
Yu juan Jin ◽  
Bohua Wang ◽  
Huafeng Tian ◽  
Yunxuan Weng
Keyword(s):  
Testing Machine ◽  
Hyperbranched Polymers ◽  
Fracture Morphology ◽  
Melt Blending ◽  
Elongation At Break ◽  
Thermogravimetric Analyzer ◽  
Polybutylene Succinate ◽  
The Difference ◽  
Physical And Chemical ◽  
The Impact

Abstract Polypropylene carbonate (PPC)/polybutylene succinate (PBS) blends were prepared by melt-blending with terminal epoxy-based hyperbranched polymers (EHBP) as modifier. The thermal properties, mechanical properties, rheological properties and fracture morphology were characterized by dynamic thermomechanical analyzer (DMA), thermogravimetric analyzer (TGA), electronic universal testing machine, rotating rheometer and scanning electron microscope (SEM), etc. Upon addition of EHBP, the difference between the glass transition temperature of PPC and PBS became smaller, indicating the compatibility of PPC and PBS were improved by EHBP. Furthermore, by adding 0.5phr of EHBP, the impact strength increased from 9.55 kJ/m− 2 to 17.31 kJ/m− 2, the elongation at break increased from 136.29–204.39%, and the tensile strength increased from 10.00 MPa to 16.84 MPa. The fracture surface of the PPC/PBS blends became rough with the increase of EHBP, even with large filamentous structures and tiny holes, which further demonstrated that EHBP acted as an excellent toughening effect on PPC/PBS. Gel content analysis confirmed that both physical and chemical micro-crosslinking were formed after incorporation of EHBP.

scholarly journals Investigation on compatibility of PLA/PBAT blends modified by epoxy-terminated branched polymers through chemical micro-crosslinking

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 39-54 ◽  
Author(s):  
Bo Wang ◽  
Yujuan Jin ◽  
Kai’er Kang ◽  
Nan Yang ◽  
Yunxuan Weng ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Glass Transition ◽  
Sem Analysis ◽  
Branched Polymers ◽  
Poly Lactic Acid ◽  
Elongation At Break ◽  
Butylene Terephthalate ◽  
The Difference ◽  
Physical And Chemical ◽  
The Impact

AbstractIn this study, a type of epoxy-terminated branched polymer (ETBP) was used as an interface compati- bilizer to modify the poly lactic acid (PLA)/poly(butylene adipate-co-butylene terephthalate) (PBAT) (70/30) blends. Upon addition of ETBP, the difference in glass transition temperature between PLA and PBAT became smaller. By adding 3.0 phr of ETBP, the elongation at break of the PLA/PBAT blends was found increased from 45.8% to 272.0%; the impact strength increased from 26.2 kJ·m−2 to 45.3 kJ·m−2. In SEM analysis, it was observed that the size of the dispersed PBAT particle decreased with the increasing of ETBP content. These results indicated that the compatibility between PLA and PBAT can be effectively enhanced by using ETBP as the modifier. The modification mechanism was discussed in detail. It proposes that both physical and chemical micro-crosslinking were formed, the latter of which was confirmed by gel content analysis.

Mechanical Properties of PVC/ABS Composite Material

2011 ◽  
Vol 217-218 ◽  
pp. 1170-1173
Author(s):  
Wei Wei Qiao ◽  
Hui Wang ◽  
Yan Hua Zhao ◽  
Yi Xia Han
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Testing Machine ◽  
Impact Testing ◽  
Elongation At Break ◽  
Poly Vinyl Chloride ◽  
Maximum Value ◽  
Material Testing Machine ◽  
The Impact ◽  
Butadiene Styrene

We investigate the mechanical properties of Poly Vinyl Chloride (PVC)/ acrylnitrile-butadiene-styrene copolymer (ABS) composite material with an impact testing machine，a material testing machine and other accessory devices. The result shows that the mechanical properties of PVC/ABS composite are a function of composition, the addition of ABS improved the mechanical properties of PVC/ ABS composite，the impact strength and elongation at break rise significantly with increasing ABS content in PVC/ABS composite and appears maximum value，While the tensile strength and modulus almost decrease monotonously with increasing ABS content in PVC/ABS composite.

Toughening Modification of Poly(butylene terephthalate)/Polycarbonate Blends by Poly(ethylene-co-octene)

2005 ◽  
Vol 13 (4) ◽  
pp. 385-394
Author(s):  
Huiyu Bai ◽  
Yong Zhang ◽  
Yinxi Zhang ◽  
Xiangfu Zhang ◽  
Wen Zhou
Keyword(s):  
Average Diameter ◽  
Melt Blending ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Bisphenol A Polycarbonate ◽  
Elongation At Break ◽  
Butylene Terephthalate ◽  
Twin Screw ◽  
Poly Ethylene ◽  
The Impact

New toughened poly(butylene terephthalate) (PBT)/bisphenol A polycarbonate (PC) blends were obtained by melt blending with commercial poly(ethylene-co-octene) copolymer (POE), varying the POE content up to 10 wt%, in a twin screw extruder, followed by injection moulding. The influence of POE on the properties of the PBT/PC blends was investigated in terms of mechanical testing, dynamic mechanical thermal (DMTA) analysis, differential scanning calorimetry (DSC), and scanning electronic microscopy (SEM). The results showed that addition of POE led to remarkable increases in the impact strength, elongation at break and Vicat temperature, and a reduction in the tensile strength and flexural properties of PBT/PC blends. The morphology of the blends was observed using SEM and the average diameter of the dispersed phase was determined by image analysis. The critical inter-particle distance for PBT/PC was determined.

scholarly journals Fishing efficiency of biodegradable PBSAT gillnets and conventional nylon gillnets used in Norwegian cod (Gadus morhua) and saithe (Pollachius virens) fisheries

2018 ◽  
Vol 75 (6) ◽  
pp. 2245-2256 ◽  
Author(s):  
Eduardo Grimaldo ◽  
Bent Herrmann ◽  
Jørgen Vollstad ◽  
Biao Su ◽  
Heidi Moe Føre ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Gadus Morhua ◽  
Plastic Pollution ◽  
Elongation At Break ◽  
Northern Norway ◽  
Before And After ◽  
Polybutylene Succinate ◽  
The Difference ◽  
Catch Rates

Abstract Fishing trials were carried out to compare the relative fishing efficiency of gillnets made of a new biodegradable resin (polybutylene succinate co-adipate-co-terephthalate, PBSAT) with conventional (nylon) nets. The fishing trials covered two consecutive fishing seasons (2016 and 2017) for cod (Gadus morhua) and saithe (Pollachius virens) in northern Norway. Results generally showed better catch rates for the nylon gillnets. The biodegradable PBSAT gillnets caught 50.0% and 26.6% fewer cod, and 41.0% and 22.5% fewer saithe than the nylon gillnets in 2016 and 2017, respectively. Even though the relative catch efficiency of the biodegradable gillnets was slightly better in 2017 than in 2016, the difference with respect to the catch efficiency of nylon gillnets may be too large for biodegradable gillnets to be accepted by fishermen if they were available commercially. Tensile strength measurements of the nylon and biodegradable PBSAT gillnets carried out before and after the fishing trials showed that the both types of gillnets had significant reductions in tensile strength and elongation at break, especially in 2017. Although less catch efficient than nylon gillnets, biodegradable PBSAT gillnets show great potential for reducing ghost fishing and plastic pollution at sea, which are major problems in these fisheries.

scholarly journals Effect of Multiwalled Carbon Nanotubes (MWNT) on the Properties of High Impact Polystyrene (HIPS)

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Juan Li
Keyword(s):  
Thermal Stability ◽  
Flame Retardancy ◽  
High Impact ◽  
Melt Blending ◽  
Flow Properties ◽  
Multiwalled Carbon ◽  
Elongation At Break ◽  
Morphological Behavior ◽  
The Impact ◽  
Thermal Stability Of

The composites of HIPS/MWNT were prepared by melt blending. The effects of the content of MWNT on the flow, mechanical, and flame retardancy properties of the composites were investigated. The morphologies of fracture surfaces were characterized through scanning electron microscopy (SEM). And the thermal stability of the composites was studied by thermogravimetric analysis. The results show that the flow properties, the impact strength, the elongation at break, and the flame retardancy are improved with the proper addition of MWNT. The morphological behavior indicates the fracture surface of HIPS/MWNT is more roughness than that of HIPS. The addition of MWNT has little influence on the thermal stability of HIPS.

Study of the Impact Properties of Steel 25Mn

2011 ◽  
Vol 704-705 ◽  
pp. 1035-1040
Author(s):  
Da Yong You
Keyword(s):  
Crack Propagation ◽  
Impact Test ◽  
Charpy Impact ◽  
Hardness Test ◽  
Fracture Morphology ◽  
Charpy Impact Test ◽  
Deformation And Fracture ◽  
The Difference ◽  
Hot Rolled ◽  
The Impact

The Charpy impact test、hardness test、microstructure and morphology analysis of impact fracture by SEM were introduced to research the difference of impact toughness on 25Mn, which were in the station of hot-rolled、normalized and quenched & tempered. The resulted showed that the changes of load、deformation and energy exhaust in difference stage of deformation and fracture could be gained by Charpy impact test. 25Mn in quenched & tempered has more deformation resistance and deformation property than which in other stations. The total impact values was 6J higher than which in normalized in average, however, the crack propagation values was 16.78J higher in average. Ductile-brittle property of the material can be estimated by the analysis of crack formation values、crack propagation values and fracture morphology on samples.

Microstructure and Mechanical Properties of Joints of X100 Line Pipe by Submerged Arc Welding

2013 ◽  
Vol 310 ◽  
pp. 139-144 ◽  
Author(s):  
Min Zhang ◽  
Liang Yang
Keyword(s):  
Mechanical Properties ◽  
Electron Microscope ◽  
Shear Fracture ◽  
Pipeline Steel ◽  
Testing Machine ◽  
Fracture Morphology ◽  
Impact Testing ◽  
Granular Bainite ◽  
Line Pipe ◽  
The Impact

The microstructure, mechanical properties, fracture morphology and crystal texture of pipeline steel X100 welded joints were investigated using optical electron microscope, scanning electron microscope, tensile and impact testing machine. The results show that, the texture of X100 line pipe mainly consists of acicular ferrite and granular bainite in weld zones, the microstructure of HAZ is coarser, which lead to softening and embrittlement. The fusion line is clear between outer weld and inner weld. The tensile strength of welded joint gets to 803 MPa, which is about 94.81% of the base materials. The impact energy at -10°C is more than 120J, and the average of percent shear fracture appearance at -10°C is up to 85%, is ductile fractures.

scholarly journals Distribusi spasial komunitas makrozoobentos di Sungai Cilalawi Kabupaten Purwakarta, Jawa Barat

DEPIK ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 164-172
Author(s):  
Hana Septiani Suminar ◽  
Zahidah Zahidah ◽  
Herman Hamdani ◽  
Asep Sahidin
Keyword(s):  
Aquatic Organisms ◽  
Disposal Site ◽  
Survey Method ◽  
Purposive Sampling ◽  
Community Activities ◽  
The Difference ◽  
Morisita Index ◽  
Physical And Chemical ◽  
The Impact ◽  
Index Of Diversity

Reservoir inlet. The Cilalawi River receives pollutant from households, as well as agriculture around the river. Utilization of the river as a waste disposal site is the impact of community activities on the environment that causes changes in environmental factors that will adversely affect the life of aquatic organisms. This research aims to map the spatial distribution of macrozoobenthos community along the Cilalawi River. This research was conducted from March-May 2019. The research method used a survey method by taking water and macrozoobenthos samples along the Cilalawi River. Data collection techniques using purposive sampling by setting 4 stations and four times sampling every two weeks. Based on the observation location, composition at station 1 consisted of 3 classes and 12 species of macrozoobenthos. The composition at station 2 consists of 3 classes and 10 species. Composition at station 3 consists of 3 classes and 16 species and composition at station 4 consists of 2 classes and 7 species. The difference in species deficit value at each station is different, this is influenced by physical and chemical parameters according to conditions around the aquatic environment. The index of diversity in the Cilalawi River ranges from 1,59 – 2,94 and the Uniformity Index of the Cilalawi River ranges from 0,2 to 0,9. The distribution pattern of makrozoobentos in the waters of the Cilalawi River based on the Morisita Index is uniform and grouped at station 1 to station 4 Keywords: Distribution, Makrozoobenthos, Cilalawi River, Jatiluhur, Pollutant ABSTRAKSungai Cilalawi merupakan salah satu anak Sungai Citarum yang menjadi inlet Waduk Jatiluhur. Sungai Cilalawi menerima buangan limbah yang berasal dari rumah tangga, serta pertanian yang berada di sekitar aliran sungai. Pemanfaatan Sungai untuk pembuangan limbah merupakan dampak dari aktivitas masyarakat terhadap lingkungan yang menyebabkan perubahan faktor lingkungan yang akan berakibat buruk bagi kehidupan organisme air. Riset ini bertujuan untuk memetakan distribusi spasial makrozoobentos di sepanjang aliran Sungai Cilalawi. Riset ini dilakukan dari bulan Maret –Mei 2019. Metode riset menggunakan metode survey yaitu dengan cara melakukan pengambilan sampel air dan sampel makrozoobentos di sepanjang Sungai Cilalawi. Teknik pengambilan data menggunakan purposive sampling dengan menetapkan 4 stasiun dan empat kali pengambilan sampling setiap dua minggu sekali. Berdasarkan lokasi pengamatan secara komposisi di stasiun 1 terdiri dari 3 kelas dan 12 spesies makrozoobentos. Komposisi di stasiun 2 terdiri dari 3 kelas dan 10 spesies. Komposisi di stasiun 3 terdiri dari 4 kelas dan 16 spesies dan komposisi di stasiun 4 terdiri dari 2 kelas dan 7 spesies. Perbedaan nilai spesies defisit pada masing – masing stasiun berbeda, hal ini dipengaruhi oleh parameter fisik dan kimiawi sesuai kondisi di sekitar lingkungan perairan tersebut. Indeks keanekaragaman di Sungai Cilalawi berkisar 1,59 – 2,94 dan Indeks Keseragaman berkisar 0,2 – 0,9. Pola distribusi makrozoobentos di perairan Sungai Cilalawi berdasarkan Indeks Morisita adalah seragam dan berkelompok di stasiun 1 hingga stasiun 4.Kata kunci: Distribusi, Makrozoobentos, Sungai Cilalawi, Jatiluhur, Bahan Pencemar 

Use of Microcrystalline Cellulose Prepared from Cotton Fabric Waste to Prepare Poly(butylene succinate) Composites

2011 ◽  
Vol 356-360 ◽  
pp. 430-434 ◽  
Author(s):  
Phasawat Chaiwutthinan ◽  
Zheng Hua Song ◽  
Thanawadee Leejarkpai
Keyword(s):  
Cotton Fabric ◽  
Microcrystalline Cellulose ◽  
Testing Machine ◽  
Butylene Succinate ◽  
Elongation At Break ◽  
Thermogravimetric Analyzer ◽  
Instron Testing Machine ◽  
Pull Out ◽  
Internal Mixer ◽  
Scanning Electron

The mechanical properties, thermal behaviors and morphology of poly(butylene succinate) (PBS)/microcrystalline cellulose (MCC) composites were investigated. The MCC used in this study was prepared by hydrolyzing cotton fabric waste with 2.5 N hydrochloric acid at 100°C for 30 min. PBS was melt mixed with three loading of MCC (10, 20 and 30 wt%) in an internal mixer, followed by compression molding into 0.3-mm sheet. The effects of MCC on the tensile properties, thermal stability, crystallization and morphology were investigated using the Instron testing machine, thermogravimetric analyzer, differential scanning calorimeter and scanning electron microscope, respectively. The incorporation of MCC into PBS results in a significant increase in the Young’s modulus but a decrease in the tensile strength and elongation at break. Moreover, the thermal degradation of the composites was not improved after introducing MCC into PBS. It was also found that, the MCC did not affect the melting temperature, but induced a slight increase in the crystallization temperature of the composites. The SEM micrographs show brittle fracture surfaces of the composites where the pull out MCC particles and pull out holes were observed.

Study on Reactive Blend Systems of PA1010/ABS/PP

2011 ◽  
Vol 239-242 ◽  
pp. 3146-3149
Author(s):  
Jia Min Zhang ◽  
Ming Yi Zhu ◽  
Zhao Xun Lian
Keyword(s):  
Mechanical Properties ◽  
Graft Copolymer ◽  
Melt Blending ◽  
Elongation At Break ◽  
Melt Grafting ◽  
Blending Process ◽  
Reactive Blend ◽  
Pp Blends ◽  
The Impact

The impacts of multi-monomers melt grafting blends of maleic anhydride(MAH) and Styrene (St) on the crystallization behavior, morphology and mechanical properties of PA1010/ABS/PP blends were studied through the methods of SEM,themal analysis, mechanical properties analysis. The results showed that the graft copolymer generated in situ by the anhydride groups of g-PP and the amino end of PA1010 reduced the interfacial tension of blends efficiently, and the interaction of the styrene groups of the graft copolymer and ABS is helpful to improve the compatibility of three components during the melt blending process. The size of dispersed phase in blends is reduced obviously and the mechanical properties have a great improvement when the percentage of g-PP in the PA1010/ABS/PP blends increases to 10%. The tensile strength of the compatibilized PA1010/ABS/PP blends is improved by 11.7%,and the impact strength and elongation at break are increased 4 times and 4.9 times, respectively.

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