Rheological Behavior and Morphologies of Reactively Compatibilized PVDF/TPU Blends

Ma, Haiying; Xiong, Zhengqin; Lv, F.; Li, Chan; Yang, Yuming

doi:10.1002/macp.201000503

Cited by 17 publications

(12 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The extreme values of characteristic relaxation times α > 0.5 and β

≅

0 (Fig. e and f) indicate that the associated springpot elements of the modified fractional Kelvin‐Voigt model have represented the friction between neighboring chains and the slight short‐term deformations of statistical polymer segment, respectively . The changes in values of fractional exponents with increasing temperature and time of pasting (Fig.…”

Section: Resultsmentioning

confidence: 89%

Rheological behavior of kuzu starch pastes

2015

View full text Add to dashboard Cite

In the paper, a comprehensive study of rheological properties of 3% (w/v) Japanese kuzu starch pastes was conducted. To describe the experimental data obtained from oscillatory and creep tests, the new rheological model-which was a modification of the fractional Kelvin-Voigt model -was proposed. The model provided an accurate description of the dynamic data in a range of nearly seven logarithmic decades of oscillation frequency v, with an average error equal to 4.7%. It allowed for a precise determination of 17 rheological parameters of the biopolymer in a function of temperature and time of pasting. These parameters have provided a lot of additional information about structure and viscoelastic properties of the test medium in comparison to the classical analysis of dynamic curves G 0 and G 00 and shear creep compliance J(t). The study indicated that kuzu starch pastes were viscoelastic polydisperse solids. Rising temperature and time of pasting caused an increase in elastic properties and average molecular weight of the biopolymer. The analysis also showed that the specific pasting conditions, 80°C, 15 min; 95°C, 75 min; and 80°C, 30 min, are particularly important from the point of view of structure and rheological properties of products in food, pharmaceutical, and cosmetics industry, respectively.

show abstract

“…The extreme values of characteristic relaxation times α > 0.5 and β

≅

Section: Resultsmentioning

confidence: 89%

Rheological behavior of kuzu starch pastes

2015

View full text Add to dashboard Cite

show abstract

“…Different types of a third component have been added as a compatibilizing agent: a graft [5] and diblock [6] copolymer, random and triblock [7] copolymers, and even a homopolymer [8]. On the other hand, chemical compatibilization entails the occurrence of a reaction in the process of polymer blending, leading to the formation of an in situ compatibilizer [9,10].…”

Section: Introductionmentioning

confidence: 98%

“…However, desirable blend properties depend highly on the degree of molecular interaction between the components [1], and many polymer pairs tend to form a multiphase mixture because of the thermodynamic incompatibility, resulting in poor interfacial adhesion and unstable phase morphology [2][3][4]. To control the phase separation in incompatible blends, either physical or chemical compatibilization is required [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of compatibilizer on compatibility and pervaporation performance of PC/PHEMA blend membranes

Guzman

Liu

Chen

et al. 2011

Journal of Membrane Science

View full text Add to dashboard Cite

“…Blending of polymers is considered as one of the most effective techniques to produce technologically promising new class of materials. Polymer blends have attracted great attention to the industrial and scientific communities by its new and improved properties and also for the possibility of recycling . Unfortunately, the majority of commercially available polymers are not miscible to each other because of the unfavorable enthalpy of mixing, which leads to a microphase‐separated structure with poor mechanical properties .…”

Section: Introductionmentioning

confidence: 99%

Reduced graphene oxide (RGO)‐induced compatibilization and reinforcement of poly(vinylidene fluoride) (PVDF)–thermoplastic polyurethane (TPU) binary polymer blend

Bera

Saha

Bhardwaj

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Compatible blends of nonreactive thermoplastic fluoropolymer, poly(vinylidene fluoride) (PVDF) and thermoplastic polyurethane (TPU) at 70/30 weight ratio, were prepared by utilizing the unique structural feature of reduced graphene oxide (RGO). Here, RGO acts as a compatibilizer as well as a reinforcing filler. RGO interacts with both polymers and reduces the interfacial tension between them, leading to compatibilization. RGO content in the blends was varied from 0 to 0.5 wt %, and the best result was found at 0.3 wt % loading. Excellent compatibilization between PVDF and TPU was established by mechanical, morphological, and thermal property studies. Chemical interaction between the RGO/TPU and RGO/PVDF was proved by FTIR-ATR study. With the incorporation of 0.3 wt % RGO, tensile strength, Izod impact strength, and elongation at break of the blend were increased by 42%, 83%, and 43%, respectively. FESEM and AFM images of blends without loading of filler after etching out of TPU phase show nonuniformly distributed hole morphology. RGO-containing blend has shown much finer and uniformly distributed holes that confirm improved compatibility between the two incompatible polymers. RGO also improves the thermal stability of the compatible blends considerably. At 0.3 wt % loading, the onset of thermal degradation increased by about 10 C.

show abstract

Rheological Behavior and Morphologies of Reactively Compatibilized PVDF/TPU Blends

Cited by 17 publications

References 35 publications

Rheological behavior of kuzu starch pastes

Rheological behavior of kuzu starch pastes

Effect of compatibilizer on compatibility and pervaporation performance of PC/PHEMA blend membranes

Reduced graphene oxide (RGO)‐induced compatibilization and reinforcement of poly(vinylidene fluoride) (PVDF)–thermoplastic polyurethane (TPU) binary polymer blend

Contact Info

Product

Resources

About