Facile optimization methods of polyvinyl chloride porous membranes with improved tensile strength

2020 ◽  
Vol 180 ◽  
pp. 193-200
Author(s):  
Nana Liu ◽  
Hailiang Liu ◽  
Fang Lu ◽  
Xiaolong Wang
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Chloride ◽  
Optimization Methods ◽  
Porous Membranes

Optimizing the tensile strength of polyvinyl chloride with a benzidine additive

1980 ◽  
Vol 15 (6) ◽  
pp. 664-668
Author(s):  
K. Oprea ◽  
S. Petrovan ◽  
M. Popa
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Chloride

scholarly journals Enhancement of the Thermomechanical Properties of a Fly Ash- and Carbon Black-Filled Polyvinyl Chloride Composite by Using Epoxidized Soybean Oil as a Secondary Bioplasticizer

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Toan Duy Nguyen ◽  
Chinh Thuy Nguyen ◽  
Van Thanh Thi Tran ◽  
Giang Vu Nguyen ◽  
Hai Viet Le ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Carbon Black ◽  
Soybean Oil ◽  
Young’S Modulus ◽  
Polyvinyl Chloride ◽  
Young's Modulus ◽  
Epoxidized Soybean Oil ◽  
Melt Mixing ◽  
Elongation At Break

Plasticized polyvinyl chloride (PVC) was fabricated using epoxidized soybean oil (ESBO) as a secondary bioplasticizer with dioctyl phthalate (DOP). The PVC/MFA/CB composites were prepared by melt mixing of the plasticized PVC with modified fly ash (MFA), carbon black N330 (CB), and polychloroprene (CR) in a Haake Rheomix mixer using a rotation speed of 50 rpm at 175°C for 6 min and then compressed by Toyoseiki pressure machine under 15 MPa. The effect of ESBO content on morphology, melt viscosity, tensile properties, and flame retardancy of PVC/MFA/CB composites was investigated. The obtained results showed that the incorporation of ESBO has significantly enhanced the processing ability, Young’s modulus, tensile strength, and elongation at break of the PVC/MFA/CB composites. The torque of PVC/MFA/CB composites was increased to approximately 12% when 50 wt% of DOP was replaced by ESBO. When ESBO was 20 wt% in comparison with DOP weight, the elongation at break, tensile strength, and Young’s modulus of the composites were increased to 48%, 24%, and 4.5%, respectively. Correspondingly, thermogravimetric analysis results confirmed that ESBO had improved the thermostability of the PVC composites. The ESBO have potential as a secondary bioplasticizer replacement material for DOP owing to their better thermomechanical stability.

Elastomer-Resin Blends. Acrylonitrile Type Synthetic Rubber and Polyvinyl Chloride Resins

1949 ◽  
Vol 22 (3) ◽  
pp. 735-755
Author(s):  
D. W. Young ◽  
D. J. Buckley ◽  
R. G. Newberg ◽  
L. B. Turner
Keyword(s):  
Tensile Strength ◽  
Low Temperature ◽  
Polyvinyl Chloride ◽  
Sodium Acetate ◽  
Blocking Temperature ◽  
Acrylonitrile Copolymer ◽  
Rubber Blends ◽  
Synthetic Rubber ◽  
Cure Time ◽  
Acrylonitrile Copolymers

Abstract 1. 1,3-Butadiene-acrylonitrile copolymers were mill-mixed with benzothiazoyl disulfide, sulfur, litharge, and vinyl resins, such as Vinylite (VYNW), and Saran and cured to compounds with good tensile strength, modulus, hardness, solvent resistance, and blocking temperature. 2. Results show that higher acrylonitrile type of copolymers give cured Vinylite-rubber blends with higher tensile strength, higher 100 per cent modulus, and greater ultimate elongation to break than low acrylonitrile copolymers. 3. The low temperature properties of the cured blends improve as the acrylonitrile content of the synthetic rubber is reduced. 4. An effective cure at 287° F is obtained in 15 to 30 minutes by using 2 parts of accelerator and 2 parts of sulfur per hundred parts of 1,3-butadieneacrylonitrile type copolymer-Vinylite blends. Added amounts of sulfur, and accelerator did not improve the properties or decrease the cure time at 287° F. 5. Some of the cured blends studied are free of tackiness at temperatures as high as 230° F. 6. Some stabilizers for vinyls tested as well as sodium acetate can be used to activate sulfur cures in 1,3-butadiene-acrylonitrile copolymer-Vinylite blends to formulate light-colored transparent products.

scholarly journals Tertiary Amine-Mediated Polyvinyl Alcohol Membrane Over the Porous Support of Polyvinyl Chloride Membrane for CO2 Separation

2021 ◽  
Vol 8 (2) ◽  
pp. 28-34
Author(s):  
Mushtaq Asim ◽  
Hashmi Saud ◽  
Nadeem Saad ◽  
Awan Zahoor ◽  
Ali Zaeem Uddin
Keyword(s):  
Polyvinyl Alcohol ◽  
Polyvinyl Chloride ◽  
Scale Up ◽  
Porous Membranes ◽  
Porous Support ◽  
Environmental Friendliness ◽  
Acid Gas ◽  
Dimethyl Acetamide ◽  
Carbon Dioxide Co2 ◽  
Polyvinyl Chloride Membrane

Great attention has been paid to membrane-based separation technology in various separation fields, including gas separation. It provides the benefits of energy efficiency, environmental friendliness, easy scale-up, and convenience in operation. Different division advancements are being utilized for the expulsion of acid gas carbon dioxide (CO2). The aim of this work is to synthesis the membrane using polyvinyl alcohol (PVA) with treatment (WT) and without treatment (WOT) of the additive that is triethanolamine (TEA), to study the effect of additive on the permeance of membrane towards CO2 and the morphology changes of each membrane. In this research, virgin PVA and PVA with TEA were cast upon the porous support membrane of polyvinyl chloride (PVC). PVA was used as the polymer matrix, and TEA was used as a CO2 facilitating agent. Distilled water was used as a solvent for TEA and PVA in preparing the solution. Dimethyl acetamide (DMAc) and Tetrahydrofuran (THF) were used as solvents for PVC porous membranes. These membranes were tested on CO2 to find out the permeability and flux rates (J). For the morphology of the membrane, we performed SEM; for thermal analysis, we performed DSC and TGA, and for the strength, we performed the tensile test. The results reveal that the presence of TEA changes the morphology and thermal behavior increases the strength and the permeability of CO2. In a nutshell, the presence of TEA enhanced the performance and the morphology of the membrane.

Influence of active inorganic fillers on the physical and mechanical properties of polyvinyl chloride wood-plastic composites when immersed

BioResources ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 789-804
Author(s):  
Qiang Jin ◽  
Lin Zhu ◽  
Jiedeerbieke Madiniyeti ◽  
Chunxia He ◽  
Li Li
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Absorption ◽  
Polyvinyl Chloride ◽  
Steel Slag ◽  
Physical And Mechanical Properties ◽  
Control Group ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Inorganic Fillers

Hydration-active steel slag and slag micropowder were used as inorganic fillers with silane coupling agent (KH550) to prepare wheat straw/polyvinyl chloride wood-plastic composites (WPCs) by extrusion molding. A 35-day immersion and a pre-immersion test were carried out to analyze the influence of steel slag and slag micropowder on the physical and mechanical properties of the WPCs under wet conditions. Results showed the following: (1) KH-550 exhibited a good surface modification effect on the activated steel slag and slag micropowder, (2) an increase in the activated steel slag and slag micropowder content could effectively reduce the percent water absorption of the WPCs by 20% to 25% and the expansion by 20% to 24%, respectively, compared with the control group, but had a limited effect on the tensile strength retention, and (3) pre-immersion could effectively induce the synergistic reinforcement effect of the active fillers, resulting in reaching the saturated water absorption within 20 days. The water absorption and tensile strength were respectively 18% to 25% lower and 1.5% to 3% higher than those of the composites without pre-immersion. The results of this study could provide experimental data and theoretical references for the influence of hydration-active inorganic fillers on WPC properties.

Porous membranes of quaternized chitosan composited with strontium-based nanobioceramic for periodontal tissue regeneration

2021 ◽  
pp. 088532822110502
Author(s):  
Adarsh Rajeswari Krishnankutty ◽  
Shamna Najeema Sulaiman ◽  
Arun Sadasivan ◽  
Roy Joseph ◽  
Manoj Komath
Keyword(s):  
Tensile Strength ◽  
Tissue Regeneration ◽  
Porous Membrane ◽  
Periodontal Ligament Cells ◽  
Porous Membranes ◽  
Pull Out ◽  
Periodontal Tissue Regeneration ◽  
Phosphate Buffered Saline ◽  
Pull Out Strength

This report demonstrates the development of a degradable quaternary ammonium derivative of chitosan (QC) composited with strontium-containing nanoapatite (SA) for bioactivity. The material was made as porous membrane by solution casting and freeze drying, for guided tissue regeneration (GTR) applications. The micromorphology, tensile strength, suture pull-out strength, degradation ( in vitro, in phosphate buffered saline), and cytocompatibility (using human periodontal ligament cells) were tested to investigate the effect of derivatization and SA addition. The porosity of the membranes increased with increasing SA content and so did the tensile strength and the degradation. The suture pull-out strength, however, showed a decrease. The cell culture evaluation endorsed biocompatibility. The composite with 1.5 mg SA per 1 mL QC was found to have optimal qualities for GTR applications.

Effect of Blending Modification on Tensile Performance of CPE/PVC

2011 ◽  
Vol 284-286 ◽  
pp. 1732-1735
Author(s):  
Xiao Ling Xie ◽  
Wen Hai Li ◽  
Ying Hui Wei
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Chloride ◽  
Hot Pressing ◽  
Mechanical Performance ◽  
Dioctyl Phthalate ◽  
Test Results ◽  
Pressing Temperature ◽  
Chlorinated Polyethylene ◽  
Breaking Elongation ◽  
Tensile Performance

The samples were modified by using chlorinated polyethylene (CPE) to increase the toughness and using dioctyl phthalate (DOP) to increase the plasticity. The tensile strength and breaking elongation of the samples were studied by changing the chlorinated polyethylene (CPE) and dioctyl phthalate (DOP) contents and the hot-pressing temperature. It was shown by the test results that, with the increase of chlorinated polyethylene (CPE) and dioctyl phthalate (DOP) contents, the tensile strength of the samples was decreased while the breaking elongation was increased. By increasing the hot-pressing temperature, the blending effect between polyvinyl chloride (PVC) and chlorinated polyethylene (CPE) as well as the mechanical performance of the samples were increased, however, over-high hot-pressing temperature would result in plasticizer precipitation.

scholarly journals Performance analysis of four plant fiber/polyvinyl chloride composites under two degradation conditions with water or seawater with xenon lamp

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 4672-4688
Author(s):  
Xinyu Zhong ◽  
Yaowen Zhu ◽  
Shuaijun Liu ◽  
Jingjing Fu ◽  
Hong Lin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Polyvinyl Chloride ◽  
Xenon Lamp ◽  
Internal Defects ◽  
Plant Fibers ◽  
Wood Plastic Composites ◽  
Plastic Composites ◽  
Plastic Matrix

To explore the properties of wood-plastic composites (WPCs) used in maritime climates, four different plant fibers (bamboo, rice straw, wheat straw, reed straw), and polyvinyl chloride (PVC) were used to prepare WPCs through extrusion. The composites were subjected to either seawater immersion + xenon lamp aging or deionized water spray + xenon lamp aging. The mechanical properties (tensile strength, flexural strength, impact strength), color change, and water absorption performance were analyzed. The plant fibers were analyzed by X-ray diffraction and Fourier transform infrared spectroscopy (FTIR), and the microstructures of the surfaces were observed by scanning electron microscopy (SEM). The reed fiber had the highest crystallinity; reed/PVC composites had good interface with the plastic matrix, less internal defects, and the best comprehensive performance, with a tensile strength, bending strength, and impact strength of 25.4 MPa, 34.4 MPa, and 4.30 KJ·m-2, respectively. The simulated seawater immersion + xenon lamp aging reduced the performance of wood-plastic composites, destroyed the quality of the combination of plant fibers and plastic matrix, and created internal defects. The comprehensive mechanical properties of reed/PVC composites were the best. The properties of bamboo/PVC composites decreased the least, with a decrease of less than 41.2%.

The Effect of Triacetin on the Plasticization Efficiency and Tensile Properties of Polyvinyl Chloride/di-2-Ethyl Hexyl Phthalate/Triacetin Compounds

2016 ◽  
Vol 1133 ◽  
pp. 206-210 ◽  
Author(s):  
Arjulizan Rusli ◽  
Nur Farhana Asul Kahar
Keyword(s):  
Molecular Weight ◽  
Tensile Strength ◽  
Glass Transition ◽  
Tensile Properties ◽  
Polyvinyl Chloride ◽  
Chemical Structure ◽  
Low Molecular Weight ◽  
Migration Ability ◽  
Elongation At Break ◽  
Before And After

The use of triacetin as an alternative plasticizer to polyvinyl chloride (PVC) was studied in term of plasticizer efficiency and tensile properties before and after ageing. The efficiency of plasticizers was evaluated based on the glass transition temperature (Tg) and the hardness value of the compounds. The Tg and hardness of all PVC/DEHP/Triacetin compounds are lower than PVC/50DEHP and PVC/50Triacetin compounds indicating synergistic plasticisation effect between both DEHP and Triacetin within the PVC compounds. The low molecular weight and chemical structure of triacetin are believed to contribute to the highest tensile strength, elongation at break and modulus of the PVC/triacetin compared with PVC/DEHP and PVC/DEHP/triacetin compounds. However, the migration ability of the triacetin plasticizer is believed to result in the biggest changes of the tensile properties of PVC compounds plasticized with triacetin before and after ageing.

scholarly journals EFFECT OF MODIFIED MAGNESIUM HYDROXIDE ON POLYVINYL CHLORIDE PLASTICATES

2021 ◽  
pp. 74-79
Author(s):  
V. F. Kablov ◽  
N. A. Keibal ◽  
T. V. Krekaleva ◽  
M. A. Moskvicheva ◽  
A. G. Stepanova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polyvinyl Chloride ◽  
Magnesium Hydroxide ◽  
Physical And Mechanical Properties

The work is devoted to the study of the effect of magnesium hydroxide modified with a phosphorus boron-containing oligomer (PBO) on physical and mechanical properties and the reduction of combustibility of compositions based on polyvinyl chloride (PVC). Tests have shown that the addition of modified magnesium hydroxide to the polyvinyl chloride compositions provides a material of reduced flammability while providing improved tensile strength and hardness.

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