Effect of morphology on the brittle ductile transition of polymer blends: 2. Analysis on poly(vinyl chloride)/nitrile rubber blends

Liu, Z.H.; Zhang, X.D.; Zhu, Xin‐Guang; Li, R.K.Y.; Zhang, Qi; Wang, F.S.; Choy, C. L.

doi:10.1016/s0032-3861(98)00090-1

Cited by 55 publications

(36 citation statements)

References 12 publications

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“…The mean diameter of a single droplet was calculated by averaging all of the diameters obtained from a rotation of 5 one time with the droplet centroid as the center. The mean droplet diameter (d) and its distribution (r) were calculated by the following equations: 13,14 …”

Section: Characterizationmentioning

confidence: 99%

Preparation and characterization of biodegradable polylactide/thermoplastic polyurethane elastomer blends

Han

Huang

2011

J of Applied Polymer Sci

140

100

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The melt blending of polylactide (PLA) and thermoplastic polyurethane (TPU) elastomer was performed in an effort to toughen the PLA. The phase morphology, mechanical properties, and toughening mechanism of the PLA/TPU blends were investigated. The results indicate that the spherical TPU particles dispersed in the PLA matrix, and the uniformity decreased with increasing TPU content. There existed long threads among some TPU droplets in blend with 30 wt % TPU. TPU improved the toughness of the PLA. With 30 wt % TPU, the elongation at break of the blend reached 602.5%, and samples could not be broken in the notched Izod impact tests at room temperature. The matrix ligament thickness of the PLA/TPU blends was below the critical value, and the blends deformed to a large extent because of shear yield caused by debonding, the formation of fibers upon impact; this dissipated a large amount of energy.

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Section: Characterizationmentioning

confidence: 99%

Preparation and characterization of biodegradable polylactide/thermoplastic polyurethane elastomer blends

Han

Huang

2011

J of Applied Polymer Sci

140

100

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“…[16] Besides, NBR is a promising material acting as toughening component for many polymers. Some studies on blending of NBR to improve impact strength and toughness were reported; with PVC, [17] PP, [18] and polyamide. [19][20][21] As noted above, many studies have reported blending PBS with various thermoplastic polymers.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Thermal Stability of Poly(butylene succinate)/Acrylonitrile Butadiene Rubber Blend

Hemsri

Thongpin

Moradokpermpoon

et al. 2015

Macromolecular Symposia

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Summary: Acrylonitrile butadiene rubber (NBR) has been blended into biodegradable Poly(butylene succinate) (PBS). The PBS/NBR blends with ratios of 100/0, 90/10, 80/20, 70/30, 60/40 and 50/50 by weight were prepared in an internal mixer. Dicumyl peroxide (DCP) was used for vulcanization of the NBR phase in the blends. Mechanical properties and thermal stability as well as morphologies of pure PBS, vulcanized NBR and PBS/NBR blends were investigated. The blends provide much higher elongation and impact strength than the pure PBS. The PBS/NBR blend with a ratio of 90/10 shows superior result to toughness, and gives comparable results for modulus and tensile strength at break with respect to the pure PBS. Morphology observation reveals the compatibility of the PBS/NBR blends, especially in the blends with 10-30 wt% NBR content. Moreover, thermogravimetric analysis (TGA) result shows that thermal stability of PBS is enhanced when NBR is added.

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“…10,30 Among them, some researchers studied the brittle-ductile transition behaviors in PVC systems. [31][32][33][34] Zhao 31 studied the effect of the particle size on the brittle-ductile transition of impact-modified poly (vinyl chloride) (PVC), and it was found that the brittle-ductile transition of the PVC/acrylic impact modifiers (AIMs) blends was independent of the particle size in the range of 55.2-341.1 nm. When the particle size was greater than 341.1 nm, however, the brittle-ductile transition shifted to a higher AIM concentration with an increase in the particle size.…”

Section: Introductionmentioning

confidence: 99%

“…When the particle size was greater than 341.1 nm, however, the brittle-ductile transition shifted to a higher AIM concentration with an increase in the particle size. Liu [32][33][34] studied the effect of morphology on the brittle-ductile transition of poly (vinyl chloride)/nitrile rubber (NBR) blends. They found that the NBR rubber particle size distribution is one of the morphological parameters dominating the toughness and the toughening mechanisms of PVC/NBR blends; the NBR rubber particles act as stress concentrators to promote shear yielding of PVC respectively, in the pseudonetwork bands and in the blends with the morphology of well-dispersed particles; the pseudonetwork morphology is much more effective in toughening PVC than the morphology of well-dispersed rubber particles.…”

Section: Introductionmentioning

confidence: 99%

The experimental results and simulation of temperature dependence of brittle‐ductile transition in PVC/CPE blends and PVC/CPE/nano‐CaCO₃ composites

You

Chen

Zou

et al. 2011

J of Applied Polymer Sci

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The effect of chlorinated polyethylene (CPE) content and test temperature on the notched Izod impact strength and brittle-ductile transition behaviors for polyvinylchloride (PVC)/CPE blends and PVC/CPE/ nano-CaCO 3 ternary composites is studied. The CPE content and the test temperature regions are from 0-50 phr and 243-363 K, respectively. It is found that the optimum nano-CaCO 3 content is 15 phr for PVC/CPE/nano-CaCO 3 ternary composites. For both PVC/CPE blends and PVC/ CPE/nano-CaCO 3 ternary composites, the impact strength is improved remarkably when the CPE content or test temperature is higher than the critical value, that is, brittle-ductile transition content (C BD ) or brittle-ductile transition temperature (T BD ). The T BD is closely related to the CPE content, the higher the CPE content, the lower the T BD . The temperature dependence of impact strength for PVC/CPE blends and PVC/CPE/nano-CaCO 3 ternary composites can be well simulated with a logistic fitting model, and the simulation results can be illustrated with the percolation model proposed by Wu and Jiang. DMA results reveal that both PVC and CPE can affect the T BD of PVC/CPE blends and PVC/CPE/nano-CaCO 3 composites. When the CPE content is enough (20 phr), the CPE is more important than PVC for determining the T BD of PVC/CPE blends and PVC/CPE/nano-CaCO 3 composites. Scanning electron microscopy (SEM) observations reveal that the impact fractured mechanism can change from brittle to ductile with increasing test temperature for these PVC systems.

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Effect of morphology on the brittle ductile transition of polymer blends: 2. Analysis on poly(vinyl chloride)/nitrile rubber blends

Cited by 55 publications

References 12 publications

Preparation and characterization of biodegradable polylactide/thermoplastic polyurethane elastomer blends

Preparation and characterization of biodegradable polylactide/thermoplastic polyurethane elastomer blends

Mechanical Properties and Thermal Stability of Poly(butylene succinate)/Acrylonitrile Butadiene Rubber Blend

The experimental results and simulation of temperature dependence of brittle‐ductile transition in PVC/CPE blends and PVC/CPE/nano‐CaCO₃ composites

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Effect of morphology on the brittle ductile transition of polymer blends: 2. Analysis on poly(vinyl chloride)/nitrile rubber blends

Cited by 55 publications

References 12 publications

Preparation and characterization of biodegradable polylactide/thermoplastic polyurethane elastomer blends

Preparation and characterization of biodegradable polylactide/thermoplastic polyurethane elastomer blends

Mechanical Properties and Thermal Stability of Poly(butylene succinate)/Acrylonitrile Butadiene Rubber Blend

The experimental results and simulation of temperature dependence of brittle‐ductile transition in PVC/CPE blends and PVC/CPE/nano‐CaCO3 composites

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The experimental results and simulation of temperature dependence of brittle‐ductile transition in PVC/CPE blends and PVC/CPE/nano‐CaCO₃ composites