Miscibility, Mechanical and Thermal Properties of Melt-Mixed Poly(trimethylene terephthalate)/Polypropylene Blends

Lin, San-Wai; Cheng, Yao-Yi

doi:10.1080/03602550902994888

Cited by 15 publications

(7 citation statements)

References 13 publications

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“…Elvaloy PTW and PP-g-MAH, to PP/PTT blend (B95E5, B90E10, B95gM5) entails considerable changes in the respective thermal characteristics, of which a reduction in crystallizability of the blend constituents is brought about, as evident from Table 2 data. This agrees with a similar published attempt [24]. The presence of the compatibilizer entities located at the interface results in a decrease of PTT dispersed phase domains which restricts the crystallization potential of both components.…”

Section: Crystallization and Meltingsupporting

confidence: 82%

“…Neat PTT samples gives no characteristic peaks remaining amorphous under imposed processing conditions. Introduction of the compatibilizer and nanoclays into PP/PTT blends has no sensible effect on PP crystalline size similar to what is reported by Lin and Cheng [24]. This is learned from the data calculated for (040) crystal plane in accordance with the Scherrer equation [32] and demonstrated graphically in Figure 3a.…”

Section: X-ray Crystallographysupporting

confidence: 65%

“…It took a longer time to reach a given crystallinity for compatibilized blends compared to the corresponding uncompatibilized ones. Elsewhere, Lin and Cheng [24] in an article on PTT/PP blends reported a complex melting behavior accounted for by recrystallization process. They stated that PP in PTT/PP blends can increase the crystallization rate of PTT and reduce the amount of imperfect PTT crystals.…”

mentioning

confidence: 99%

“…Poly(trimethylene terephthalate) (PTT), a relatively new member of aromatic polyesters, has been established to possess a combination of properties of two analogous predecessors, poly(ethylene terephthalate) (PET) and poly(butylene terephthalate) (PBT) [22]. Few publications in the literature focus on the thermal properties of PP/PTT blends and nanocomposites which communicate rather contradictory findings in some aspects [23][24][25][26]. Xue et al [23] in a detailed study reported that PTT and PP crystallization rates are expedited by the presence of each other and the acceleration is dependent on the blend ratio.…”

mentioning

confidence: 99%

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Crystallization and melting behavior of nanoclay-containing polypropylene/poly(trimethylene terephthalate) blends

Jafari¹,

Kalati-vahid²,

Khonakdar³

et al. 2012

Express Polym. Lett.

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This contribution concerns preparation and characterization of polypropylene (PP)/poly(trimethylene terephthalate) (PTT) melt-mixed blends in the presence of organically-modified montmorillonite nanoclays and functional compatibilizers. Immiscibility and nanocomposite formation were confirmed via transmission electron microscopy. An intercalated structure was observed by wide angle X-ray diffraction technique. Crystallization, and melting characteristics were studied by differential scanning calorimetry in both isothermal and non-isothermal modes, supplemented by temperature modulated DSC (TMDSC). A concurrent crystallization was found for both polymeric components in the blends. Whereas blending favored PP crystallizability, it interrupted that of PTT. The addition compatibilizers interfered with rate, temperature, and degree of crystallization of PP and PTT. On the contrary, nanoclays incorporation increased crystallizability of each individual component. However, as for blend nanocomposite samples, the way the crystallization behavior changed was established to depend on the type of nanoclay. Based on kinetic analysis, isothermal crystallization nucleation followed athermal mechanism, while that of non-isothermal obeyed thermal mode. Addition of nanoclays shifted nucleation mechanism from athermal to thermal mode

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Section: Crystallization and Meltingsupporting

confidence: 82%

Section: X-ray Crystallographysupporting

confidence: 65%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Crystallization and melting behavior of nanoclay-containing polypropylene/poly(trimethylene terephthalate) blends

Jafari¹,

Kalati-vahid²,

Khonakdar³

et al. 2012

Express Polym. Lett.

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“…These composites include PTT and PP [10,11] blends, PTT and PET [12,13] blends, PTT and PBT [14] blends, PTT and PEN [15,16] blends as well as inorganic particles [10,18] or cations [19,20] modified PTT, etc.…”

Section: Introductionmentioning

confidence: 99%

Rheological, Mechanical and Thermal Properties of Polytrimethylene Terephthalate

Guo

Wang

2012

Polymer-Plastics Technology and Engineering

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The rheological, mechanical properties and thermal behaviors of polytrimethylene terephthalate were investigated. The results show that: The critical shear rate decreased with an increase in molecular weight, and also increased with a rise in temperature. Zero shear viscosity increased with an increase in molecular weight and decreased with a rise in temperature. The a-relaxation peak was clearly seen at about 70 C. The loss modulus of high molecular weight PTT decreased rapidly. The glass transition temperature of PTT was about 72 C. The thermal degradationof PTT occurred in the temperature range of 400 C-467 C, and the maximum heat loss temperature was 439 C.

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Mechanisms and kinetics of thermal degradation of poly(butylene succinate‐co‐propylene succinate)s

Chen

2011

J of Applied Polymer Sci

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Poly(butylene succinate) (PBSu) and two PBSu-rich poly(butylene succinate-co-propylene succinate)s were studied. Copolyesters were characterized as random copolymers, based on 13 C-NMR spectra. TGA-FTIR was used to monitor the degradation products at a heating rate of 5 C/min under N 2 . FTIR spectra revealed that the major products were anhydrides, which were formed following two cyclic intramolecular degradation mechanisms by the breaking of the weak O-CH 2 bonds around succinate groups. Thermal stability at heating rates of 1, 3, 5, and 10 C/min under N 2 was investigated using TGA. The model-free methods of the Friedman and Ozawa equations are useful for studying the activation energy of degradation in each period of mass loss. The results reveal that the random incorporation of minor propylene succinate units into PBSu did not markedly affect their thermal resistance. Two model-fitting mechanisms were used to determine the mass loss function f(a), the activation energy and the associated mechanism. The mechanism of autocatalysis nth-order, with f(a) ¼ a m (1 À a) n , fitted the experimental data much more closely than did the nth-order mechanism given by f(a) ¼ (1 À a) n . The obtained activation energy was used to estimate the failure temperature (T f ). The values of T f for a mass loss of 5% and an endurance time of 60,000 h are 160.7, 155.5, and 159.3 C for PBSu and two the copolyesters, respectively.

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Miscibility, Mechanical and Thermal Properties of Melt-Mixed Poly(trimethylene terephthalate)/Polypropylene Blends

Cited by 15 publications

References 13 publications

Crystallization and melting behavior of nanoclay-containing polypropylene/poly(trimethylene terephthalate) blends

Crystallization and melting behavior of nanoclay-containing polypropylene/poly(trimethylene terephthalate) blends

Rheological, Mechanical and Thermal Properties of Polytrimethylene Terephthalate

Mechanisms and kinetics of thermal degradation of poly(butylene succinate‐co‐propylene succinate)s

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