The effect of Pglass state on the non-isothermal cold and melt crystallization processes of PET matrix

Liu, Huichao; Ma, Jianzhong; Xu, Jian

doi:10.1016/j.tca.2015.05.014

Cited by 10 publications

(11 citation statements)

References 26 publications

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“…It is worth noting that the PET polymer composites crystallized at an early stage (i.e., higher temperature) of the cooling process because the dispersed molecular-sized Pglass particles functioned as nucleation agents in the PET matrix hybrids, consistent with previously reported results [24,25]. In contrast, Liu et al [26] reported that the value of Tp was not significantly influenced by the amount of Pglass in the PET polymer matrix hybrids using a 10 o C/min of cooling rate. In addition, with a 30 o C/min of cooling rate, Tp was decreased.…”

Section: Solid State Nmrsupporting

confidence: 88%

“…Note that Pglass is distributed at both the microscale and nanoscale in the PET matrix materials. In addition, it is noteworthy that the Pglass droplets prepared by droplet coalescence were encased by PET polymer matrix due to the effective hydrogen bonding interaction between the hydrogen donor in hydroxyl groups from the Pglass and oxygen acceptor atoms in the ester from the PET polymer [20,26,28].…”

Section: Thermal Characteristicsmentioning

confidence: 99%

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Unexpected effects of inorganic phosphate glass on crystallization and thermo-rheological behavior of polyethylene terephthalate

Kim

Rahimi

Alam

et al. 2018

Polymer

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Section: Solid State Nmrsupporting

confidence: 88%

Section: Thermal Characteristicsmentioning

confidence: 99%

Unexpected effects of inorganic phosphate glass on crystallization and thermo-rheological behavior of polyethylene terephthalate

Kim

Rahimi

Alam

et al. 2018

Polymer

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“…As shown in Fig. , the phase boundary of the PET and TFP‐glass was blurred, had a good compatibility between them, which may be attributed to the hydrogen‐bond formation between PET and TFP‐glass. And TFP‐glass particles were homogeneous dispersed in the PET matrix and did not change with the change of its content.…”

Section: Resultsmentioning

confidence: 93%

“…On the other hand, TFP‐glass, which has higher intrinsic modulus , can be used as conventional reinforcing fillers. Therefore, TFP‐glass can be used to prepare organic polar polymer/inorganic glass composites with low viscosity and high modulus. However, the mechanism involved is still unrevealed, so it is very meaningful to study the enhancement mechanism of flowability and modulus of TFP‐glass/polar polymer composites.…”

Section: Introductionmentioning

confidence: 99%

The enhancement mechanism of flowability and modulus of PET/TFP‐glass composites

Zhang

Liu

et al. 2018

Polymer Composites

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Tin fluoride phosphate glass (TFP‐glass) has been found to improve the rheological properties and modulus of polar polymer, but the mechanism involved is still unrevealed. In this work, a kind of poly (ethylene terephthalate) (PET)/TFP‐glass composites with low viscosity and high modulus were prepared by melt blending. In order to explore the enhancement mechanism of flowability and modulus, we investigated the structure change of PET before and after blending, the viscosity evolution of TFP‐glass during heating and the final phase morphology of PET/TFP‐glass composites. Based on intrinsic viscosity and rheological measurements, the improvement of the flowability was attributed to the decrease of molecular weight of PET and the macromolecular plasticizer effect of TFP‐glass. Non‐isothermal crystallization behaviors of the composites indicated that the crystallization properties of PET were improved due to heterogeneous nucleation effect of the TFP‐glass and the decreased molecular weight of PET. The improved crystallization of PET as well as strong interfacial interaction between PET and TFP‐glass contribute to a significant enhancement in the modulus of composites, as compared with pure PET. POLYM. COMPOS., 40:2555–2563, 2019. © 2018 Society of Plastics Engineers

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“…Unfortunately, the goodness of fit in the plots used to compute the parameters, Figs. 15 the present work, is the only procedure utilized to check the suitability of the model frequently found in the specific literature [42][43][44][45][46].…”

Section: Nonisothermal Melt Crystallization: Kinetic Analysismentioning

confidence: 99%

Nonisothermal melt crystallization of PHB/babassu compounds

Vitorino

Cipriano

Wellen

et al. 2016

J Therm Anal Calorim

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Poly(3-hydroxybutyrate) (PHB)/babassu compounds were prepared in a laboratory internal mixer with 10, 30, and 50 % by mass of fiber content. Nonisothermal melt crystallization behavior of PHB/babassu compounds was investigated using differential scanning calorimetry, and crystallization parameters were determined at cooling rates ranging between 2 and 32°C min -1 . Adding babassu fiber affected the melt crystallization behavior of PHB, and increasing filler content from 10 to 30 % has significant effects on the thermal characteristics of the system. Further increase in filler content from 30 to 50 % filler content has no effect on crystallization temperature and rate, but it has important positive consequences, once there is a considerably latitude in choosing the actual filler level in highly loaded PHB/babassu compounds without affecting processing characteristics. The melt crystallization kinetics of PHB/babassu compounds was analyzed by three empirical models widely used to represent nonisothermal polymer crystallization data: Pseudo-Avrami, Ozawa, and Mo. Kinetics analyses indicate that the Pseudo-Avrami model represented well the experimental data for both compounds in a wide interval of temperature, conversion, and cooling rates; the Ozawa model with two different sets of parameters, for low and high cooling rates, was found to correlate the data equally well, but over limited ranges of the variables, and the model proposed by Mo and collaborators did not adequately represent the experimental data for the systems and conditions tested. List of symbols cCrystallization rate c 0.1-99.9% Crystallization rate measured between 0.1 and 99.9 % of mass transformation c 20-80% Crystallization rate measured between 20 and 80 % of mass transformation c max Maximum crystallization rate (at T c ) E 0 Total latent heat released or absorbed by the sample during the crystallization or melting event F Mo rate parameter J DSC output heat flow rate of thermal energy exchanged between sample and the surroundings J 0 Virtual baseline during a phase change event K 0 Pseudo-Avrami rate parameter m Ozawa exponente MFR Melt flow rate M n Number average molar weight n 0 Pseudo-Avrami exponente t 1Onset time of the crystallization event t 2Endtime of the crystallization event T Temperature T 0.1% Temperature to attain 0.1 % of crystallized fraction T 50%

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The effect of Pglass state on the non-isothermal cold and melt crystallization processes of PET matrix

Cited by 10 publications

References 26 publications

Unexpected effects of inorganic phosphate glass on crystallization and thermo-rheological behavior of polyethylene terephthalate

Unexpected effects of inorganic phosphate glass on crystallization and thermo-rheological behavior of polyethylene terephthalate

The enhancement mechanism of flowability and modulus of PET/TFP‐glass composites

Nonisothermal melt crystallization of PHB/babassu compounds

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