Nucleation mechanism and crystallization behavior of poly(ethylene terephthalate) containing ionomers

Ying, Yu; Yu, Yanlei; Jin, Ming; Bu, Haishan

doi:10.1002/1521-3935(20000901)201:14<1894::aid-macp1894>3.0.co;2-q

Cited by 44 publications

(35 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In other words, A1 and A2 act as heterogeneous species to initiate nucleation, and nucleation rate on their surface is very fast. As described in a previous paper, [18] the nucleation mechanism of Surlyn and AClyn is different although they have a similar structure. In contrast with Surlyn, A1 and A2 may not dissolve in the melt of PET and their small particles dispersed in the melt initiate nucleation process.…”

Section: Crystallization Of Pet/ionomermentioning

confidence: 74%

See 1 more Smart Citation

Crystallization Behavior of Poly(ethylene terephthalate) Modified by Ionomers

Ying

Bu²

2001

Macromol. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

Ionomers (AClyn® Na, and AClyn® Zn) were used as nucleating additives, and their effect on crystallization of poly(ethylene terephthalate) (PET) was investigated by using differential scanning calorimetry (DSC). The results showed that the crystallization rate of PET is accelerated by both ionomers, and the ionomer containing Na+ increases the crystallization rate of PET slightly more than the ionomer containing Zn+2. In addition, the measurement of solution viscosity of PET certified that the addition of ionomers led to a minor decrease in molecular weight of PET.

show abstract

Section: Crystallization Of Pet/ionomermentioning

confidence: 74%

“…[18] In this paper, the effects of different metal salts of an ionomer, AClyn, on the crystallization and the molecular weight of PET were examined and compared by means of differential scanning calorimetry (DSC) and through the measurement of solution viscosity.…”

Section: Introductionmentioning

confidence: 99%

Crystallization Behavior of Poly(ethylene terephthalate) Modified by Ionomers

Ying

Bu²

2001

Macromol. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The nucleating agent promotes the nucleation of polymer crystallization by initiating heterogeneous nucleation, which starts on the surface of microscopically insoluble particles dispersed randomly in the polymer melt. [28,29] Such particles can be impurities or arbitrary added nucleating agents. The nucleation on the surface of foreign particles lowers the surface free energy of the nucleus and hence lowers the energy of nucleus formation, leading to an increase in the nucleation rate.…”

Section: Resultsmentioning

confidence: 99%

Effect of Methylated Cyclodextrins on the Crystallization of Poly(3‐hydroxybutyrate)

Shin

Dong

et al. 2006

Macro Chemistry & Physics

View full text Add to dashboard Cite

Summary: The effects of methylated CDs, α‐ and β‐DMCD and α‐ and β‐TMCD on the crystallization behavior of P(3HB) have been investigated by employing DSC and polarized optical microscopy (POM). The crystallization and nucleation of P(3HB) was improved by an addition of appropriate amount of each methylated CD, while negative effect of miscible blend was observed when the amount of addition exceeds the optimum value for the maximum nucleating effect. β‐TMCD was shown to be the most effective for the enhancement of the P(3HB) crystallization, thought to be due to the possibility of IC formation with P(3HB).Plots of log{−ln [1 − X(t)]} versus log (t) for mixtures of P(3HB) with different CDs or talc, respectively.imagePlots of log{−ln [1 − X(t)]} versus log (t) for mixtures of P(3HB) with different CDs or talc, respectively.

show abstract

“…On the other hand, nucleation initiated by phase separation may also contribute to the decrease in T ch and the increase in crystallization rate at low temperature. Recently, it was indicated that nucleating agents promote crystallization of PET in the low temperature region; [16] regardless of large supercooling, it seems still substantial to reduce DG* for accelerating PET crystallization.…”

Section: Crystallization Of Pet/sbt Mixturesmentioning

confidence: 99%