Effect of temperature on the impact behavior of PVC/ASA binary blends with various ASA terpolymer contents

AbstractAcrylonitrile-styrene-acrylic (ASA) terpolymer has a typical core-shell structure with poly(butyl acrylate) (PBA) as the soft core and styrene-acrylonitrile (SAN) copolymer as the hard shell. The impact behavior of poly(vinyl chloride) (PVC)/ASA binary blends with various ASA terpolymer contents was systematically investigated at three different temperatures (23°C, 0°C, and –30°C). With the addition of 30 phr ASA terpolymer, the impact strength of the blends increased by almost 45 times at 23°C and 29 times at 0°C compared with the neat PVC, respectively. Herein, ASA terpolymer particles were related to each other to form a percolation group and the stress field around the ASA particles was connected with each other, thereby more effectively served as the stress concentrators, exhibiting the highest toughening efficiency. In addition, the significantly improved toughness could also be attributed to the special core-shell structure of ASA terpolymer, as well as, a good miscibility between the PVC matrix and the SAN shell of the ASA terpolymer. However, the decreasing temperature limited the flexibility of the PBA chain, resulting in the insignificant role of ASA terpolymer in toughening PVC at –30°C. Moreover, the improvement in the toughness of the blends did not sacrifice its heat distortion temperature.

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Tailoring the impact behavior of polyamide 6 ternary blends via a hierarchical core–shell structure in situ formed in melt mixing

RSC Advances ◽

10.1039/c4ra14207a ◽

2015 ◽

Vol 5 (19) ◽

pp. 14592-14602 ◽

Cited By ~ 23

Author(s):

Rui Dou ◽

Chao Shen ◽

Bo Yin ◽

Ming-bo Yang ◽

Bang-hu Xie

Keyword(s):

Shell Structure ◽

Polyamide 6 ◽

Impact Behavior ◽

Ternary Blend ◽

Core Shell ◽

Ternary Blends ◽

Melt Mixing ◽

Core Shell Structure ◽

The Impact

The hierarchical core–shell structure in PA6/HDPE-g-MA/EPDM ternary blend was firstly formed using simple melt mixing. A super toughness PA6 ternary blends with HDPE-g-MA multi-core structure was obtained.

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Core/shell structure NiCo2O4@MnCo2O4 nanofibers fabricated by different temperatures for high-performance supercapacitors

Materials Research Express ◽

10.1088/2053-1591/aab0eb ◽

2018 ◽

Vol 5 (3) ◽

pp. 035503 ◽

Cited By ~ 3

Author(s):

Qing Wang ◽

Xuefeng Qin ◽

Pengcheng Jiang ◽

Jianfeng Dai ◽

Weixue Li ◽

...

Keyword(s):

Shell Structure ◽

High Performance ◽

Core Shell ◽

Different Temperatures ◽

Core Shell Structure

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Effect of core-shell structure latex on pigment coating properties

BioResources ◽

10.15376/biores.14.1.1241-1251 ◽

2018 ◽

Vol 14 (1) ◽

pp. 1241-1251

Author(s):

Kyudeok Oh ◽

Araz Rajabi Abhari ◽

Wanhee Im ◽

Jee-Hong Lee ◽

Zhenghui Shen ◽

...

Keyword(s):

Pore Structure ◽

Shell Structure ◽

Coating Layer ◽

Core Shell ◽

Binding Ability ◽

The Core ◽

Coated Papers ◽

Pigment Coating ◽

Hard Shell ◽

Core Shell Structure

The pore structure of the coating layer is one of the most important factors in determining the printability of coated papers. The coating pigment and binder are two principal components in paper coating, and their characteristics have a critical influence on the coating structure. The glass transition temperature (Tg) of latex binders affects the mechanical strength and pore structure of the pigment coating layer because the latex Tg influences the binding ability of latex and the shrinkage of the coating layer during the drying process. In this study, styrene-acrylate (S/A) core-shell structure latexes with different monomer compositions in the core and shell layers were designed, and their properties were compared with those of a conventional latex. These core-shell latexes were prepared using the same monomers in the same proportion and were used to investigate the effect of the core-shell structure on the structural and mechanical properties of the coating layer. The hard-shell latex with a high styrene content in the shell part yielded paper that was glossier and less rough and formed finer pores, resulting in an increased ink absorption rate into the coated paper compared to the other types of latex. The hard-shell structure showed better performance in printing uniformity and had less mottling.

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New insights into the impact toughness of ASA (acrylonitrile-styrene-acrylate) with controllable core–shell structure synthesized by three-stage seeded emulsion polymerization

International Journal of Polymer Analysis and Characterization ◽

10.1080/1023666x.2017.1342190 ◽

2017 ◽

Vol 22 (6) ◽

pp. 534-544 ◽

Cited By ~ 2

Author(s):

Bo Xiang ◽

Jun Zhang

Keyword(s):

Impact Toughness ◽

Emulsion Polymerization ◽

Shell Structure ◽

Core Shell ◽

Seeded Emulsion Polymerization ◽

Core Shell Structure ◽

The Impact

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Effect of Temperature on Impact Properties of ZA27 Alloy

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.476-478.75 ◽

2012 ◽

Vol 476-478 ◽

pp. 75-80 ◽

Cited By ~ 1

Author(s):

Li Ping Zhong ◽

Jia Yong Si ◽

Zi Qiao Zheng

Keyword(s):

Impact Toughness ◽

Fracture Surface ◽

Impact Energy ◽

Impact Testing ◽

Impact Fracture ◽

Impact Behavior ◽

Effect Of Temperature ◽

Za27 Alloy ◽

Different Temperatures ◽

The Impact

The impact toughness of ZA27 alloy at different temperatures is investigated by pendulum impact testing. In addition, the morphology of impact fracture surface observed by SEM. The results indicate that impact energy of ZA27 alloy is reduced with the temperature rising when the temperature is lower than 100°C. At 100°C to 200°C, impact energy increase as the temperature rising. And when the temperature reaches to 250°C, impact energy suddenly descend. Impact energy is the highest and reaches to 72.768J at 20°C. At impact fracture surface, it is mostly tear ridges and dimples. The higher the impact energy is, the more obvious the characteristic of tear ridges is. Furthermore, dimples are small and distribute more uniformly. Lower the impact energy, the less distinct of tear ridges. Dimples are larger and deeper, their distribution are not uniform. Impact behavior of material could be evaluated by the width of impact curve. The wider the peak of impact curve, the higher the impact toughness. But impact toughness is worse while peak is narrow.

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Effect of Melt Overheating Treatment on the Melt Structure and Solidified Structures of Al75Bi9Sn16 Immiscible Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.898.223 ◽

2017 ◽

Vol 898 ◽

pp. 223-230

Author(s):

Peng Jia ◽

Yang Liu ◽

Jin Yang Zhang ◽

Yu Yao Ma ◽

Chen Wu ◽

...

Keyword(s):

Phase Separation ◽

Liquid Phase ◽

Shell Structure ◽

Solidification Rate ◽

Liquid Phase Separation ◽

Core Shell ◽

The Core ◽

Immiscible Alloy ◽

Core Shell Structure ◽

The Impact

In this paper, the liquid phase separation and solidification process of the Al75Bi9Sn16 immiscible alloy were studied with calorimetric and resistivity methods to make the melt superheated treatment process. The impact of melt overheating treatment (MOT) on the phase constitution and solidification microstructures were investigated using X-Ray diffraction (XRD) and field emission scanning electron microscope (FESEM) to determine the structural sensitivity to the melt superheated degree, and find a new strategy for improving the forming ability of the core-shell structure of the Al75Bi9Sn16 alloy. The results show that: the liquid phase separation and precipitation of primary (Sn) phase occur in 1039K-880K and 460K-403K; the core-shell structure with Sn-Bi-rich core and Al-rich shell can be formed under conventional casting conditions; the melt overheating treatment (MOT) can promote the formation of core-shell structure by increasing solidification time t0 and decreasing the average solidification rate v.

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Fracture Toughness and Fracture Mechanisms of PBT/PC/IM Blend

MRS Proceedings ◽

10.1557/proc-274-3 ◽

1992 ◽

Vol 274 ◽

Cited By ~ 1

Author(s):

Jingshen Wu ◽

Yiu-Wing Mai ◽

Brian Cotterell

Keyword(s):

Fracture Toughness ◽

Impact Behavior ◽

Effect Of Temperature ◽

Fracture Mechanisms ◽

Polybutylene Terephthalate ◽

Different Temperatures ◽

Work Concept ◽

The Impact ◽

Specific Fracture ◽

Fracture Work

ABSTRACTStatic and impact fracture toughness of a Polybutylene terephthalate (PBT)/Polycarbonate (PC)/Impact modifier (IM) blend was studied at different temperatures. The experimental results were interpreted by the specific fracture work concept and J-integral analysis. It is found that the specific fracture work concept characterizes the impact behavior of the blend very well. In the static fracture tests the specific fracture work gives the crack initiation resistance of the blend which is consistent with the JIC value obtained. The effect of temperature was also examined and the fracture mechanisms were investigated via TEM and SEM. Extensive cavitation of the impact modifiers and plastic flow of matrix in the vicinity of the crack tip is believed to be the major toughening process of the enhanced fracture toughness.

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Preparation and Characterization of Core-Shell Type Versatate-Fluorocarbon Emulsion

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.183-185.2055 ◽

2011 ◽

Vol 183-185 ◽

pp. 2055-2058

Author(s):

Xiao Hui Gao ◽

Yu Feng Li ◽

Zhou Mao Yu

Keyword(s):

Contact Angle ◽

Particle Size ◽

Shell Structure ◽

Raw Materials ◽

Core Shell ◽

Seeded Emulsion Polymerization ◽

Hard Shell ◽

Fluorocarbon Emulsion ◽

Core Shell Structure ◽

Organic Fluorine

Versatate-fluorocarbon emulsion with core-shell structure was synthesized by seeded emulsion polymerization using versatate, organic fluorine and acrylate as raw materials. The influences of amount of organic fluorine and versatate, core-shell ratio on the properties of emulsion were discussed. The emulsion was characterized with contact angle analyzer, particle size, transmission electron microscopy (TEM), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The results showed that the emulsion had good properties while w(organic fluorine)=6%, w(versatate)=8%, soft core-hard shell and w(core):w(shell)=3:2. The particle size is 110nm and with core-shell structure. The contact angle of emulsion film to water is 98.1º. The synergistic effect of versatate and fluorocarbon based on core-shell structure improve the over-all properties effectively.

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