Fully bio-based, highly toughened and heat-resistant poly(L-lactide) ternary blends via dynamic vulcanization with poly(D-lactide) and unsaturated bioelastomer

In this paper, ternary blends of PVC mixed with α-methyl styrene-acrylonitrile (α-MSAN) and toughening modifier was prepared, with the aim to obtain a high performance PVC profile with an improved heat resistant temperature, better impact property and good processability. The results of dynamic mechanical analysis (DMA) showed the good miscibility owing to the additional intermolecular interaction between α-hydrogen of PVC and AN of α-MSAN. The glass transition temperature (Tg) and vicat softening temperature (VST) were improved remarkably with introduction of α-MSAN due to excellent heat resistant property of α-MSAN. With regard to mechanical and process properties, the impact strength and dynamic rheological property were evaluated.

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Highly Toughened and Heat-Resistant Poly(lactic acid) with Balanced Strength Using an Unsaturated Liquid Crystalline Polyester via Dynamic Vulcanization

ACS Applied Polymer Materials ◽

10.1021/acsapm.0c01095 ◽

2020 ◽

Author(s):

Rong Yang ◽

Hongwei Cao ◽

Pengliang Zhang ◽

Li Chen ◽

Guoxiang Zou ◽

...

Keyword(s):

Lactic Acid ◽

Liquid Crystalline ◽

Poly Lactic Acid ◽

Dynamic Vulcanization ◽

Heat Resistant ◽

Liquid Crystalline Polyester

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Ternary blends based on poly (ethylene-naphthalate)/glass fibers/nitrile rubber: Preparation, properties and effect of dynamic vulcanization

Polymer Testing ◽

10.1016/j.polymertesting.2013.10.003 ◽

2013 ◽

Vol 32 (8) ◽

pp. 1529-1537 ◽

Cited By ~ 2

Author(s):

Chuanhui Xu ◽

Liming Cao ◽

Yukun Chen

Keyword(s):

Glass Fibers ◽

Nitrile Rubber ◽

Ternary Blends ◽

Dynamic Vulcanization ◽

Poly Ethylene

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Highly toughened polypropylene/ethylene–propylene-diene monomer/zinc dimethacrylate ternary blends prepared via peroxide-induced dynamic vulcanization

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2012.10.034 ◽

2013 ◽

Vol 138 (1) ◽

pp. 63-71 ◽

Cited By ~ 24

Author(s):

Yukun Chen ◽

Chuanhui Xu ◽

Liming Cao ◽

Xiaodong Cao

Keyword(s):

Ethylene Propylene Diene Monomer ◽

Ternary Blends ◽

Dynamic Vulcanization ◽

Ethylene Propylene

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Morphological behavior of compatibilized ternary blends prepared by mechanical mixing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100151830 ◽

1993 ◽

Vol 51 ◽

pp. 1200-1201

Author(s):

S.D. Smith ◽

R.J. Spontak ◽

D.H. Melik ◽

S.M. Buehler ◽

K.M. Kerr ◽

...

Keyword(s):

Interfacial Adhesion ◽

Diblock Copolymers ◽

Ternary Blends ◽

Mechanical Mixing ◽

Design Considerations ◽

Covalently Bonded ◽

Homopolymer Blends ◽

Emulsifying Agent ◽

Surface Active ◽

Low Entropy

When blended together, homopolymers A and B will normally macrophase-separate into relatively large (≫1 μm) A-rich and B-rich phases, between which exists poor interfacial adhesion, due to a low entropy of mixing. The size scale of phase separation in such a blend can be reduced, and the extent of interfacial A-B contact and entanglement enhanced, via addition of an emulsifying agent such as an AB diblock copolymer. Diblock copolymers consist of a long sequence of A monomers covalently bonded to a long sequence of B monomers. These materials are surface-active and decrease interfacial tension between immiscible phases much in the same way as do small-molecule surfactants. Previous studies have clearly demonstrated the utility of block copolymers in compatibilizing homopolymer blends and enhancing blend properties such as fracture toughness. It is now recognized that optimization of emulsified ternary blends relies upon design considerations such as sufficient block penetration into a macrophase (to avoid block slip) and prevention of a copolymer multilayer at the A-B interface (to avoid intralayer failure).

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