Inhibition of crystalline structure development in a reactive polycarbonate-poly(butyleneterephthalate) blend

Wilkinson, Andrew; Tattum, S. B.; Ryan, Anthony J.

doi:10.1007/s00289-002-0014-2

Cited by 29 publications

(35 citation statements)

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“…On one hand, the introduction of PC in the PBT/PC blend leads to the fall of crystallization temperature because of its plasticizing effect. On the other hand, the occurrence of transesterification reaction results in the decrease of the crystallization capacity of PBT 10, 21. In DSC, this is seen as a decrease of the melting peak, i.e., heat of fusion as well as a decrease in the melting peak temperature 22.…”

Section: Resultsmentioning

confidence: 99%

“…To further investigate the inhibition behavior of silicone phosphate on the transesterification, the PBT/PC blends with and without stabilizer were extracted in CH 2 Cl 2. Wilkinson et al9, 10 observed that as the degree of transesterification increased, the blend changed its nature from block copolymer to random copolymer. The random copolymer and pure PC can dissolve in CH 2 Cl 2 , and the nonsolute parts include pure PBT and block copolymer 18.…”

Section: Resultsmentioning

confidence: 99%

“…It was found that as the transesterification reaction proceeded, the viscosity of the blend was decreased. Wilkinson et al9, 10 prepared PC/PBT blends by adding alkyl titanium as transesterification catalyst. They observed that as the degree of transesterification increased, the blend changed its nature from block copolymer to random copolymer.…”

Section: Introductionmentioning

confidence: 99%

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Influence of silicone phosphate on the transesterification in PBT/PC blends

Lei

Chen

Gou

et al. 2009

J of Applied Polymer Sci

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Because of the transesterification reaction between poly(butylene terephthalate) (PBT) and polycarbonate (PC), the crystallization behavior and thermal-resistant properties of the blend have been known to be decreased. Therefore it is of importance to control the transesterification degree in PBT/PC blends. In this article, the effect of silicone phosphate on the transesterification reaction between PBT and PC was studied using differential scanning calorimetry (DSC), nuclear magnetic resonance (NMR), and infrared spectroscopy (IR). It was found that the crystallization temperature of PBT/PC/silicone phosphate was 18.0 C higher than that of pure system, and the difference of the crystallization temperature between the first and secondary cooling cycles in DSC was 15.8 C lower than that of the pure system. IR results showed that both random and block copolymer existed in the stabilized system, and both IR and NMR results proved the decrease of the copolymer content by the introduction of silicone phosphate. Compared with that of the pure system, the Vicat soft temperature of the stabilized system was increased by 17.2 C. All the results showed that silicone phosphate was an effective inhibitor for the controlling of the transesterification reaction in PBT/PC blends.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of silicone phosphate on the transesterification in PBT/PC blends

Lei

Chen

Gou

et al. 2009

J of Applied Polymer Sci

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“…12), for the melt process two peaks were evident: a minor peak at a lower temperature (peak I) and a major peak at a higher temperature (peak II). This phenomenon of multiple melting of PBT has been described in the literature [11,12]. To investigate this point further, the relative heights of the peaks were measured for each sample.…”

Section: The Multiple Melting Phenomenon Of Pbtmentioning

confidence: 99%

The effect of pigmentation on the mechanical properties and the crystallisation behaviour of polymer blends (Xenoy®)

Fagelman

Guthrie

2006

Dyes and Pigments

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“…This phase preference is thought to be caused partially by the expulsion of the impact modifier particles from the crystallising PBT. Thus, ''bad'' interaction of the shell of the modifier with the molten matrix during blending, especially with the PC is thought to occur, 36 by mechanical stripping and partial dissolution of the PBT in the surrounding PC 19 and by the values for the spreading coefficients of the blend components.…”

Section: Phase Preferences In Pc-pbt Blendsmentioning

confidence: 99%

Polymer blends: the PC–PBT case

Santos

Guthrie

2006

J. Mater. Chem.

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Binary polymer alloys represent a fast growing sector of the plastics industry. They can result in new materials exhibiting high degrees of synergism in behaviour and/or materials with optimal cost/performance. >Please check the proof of your paper carefully. Your proof will not be read in detail by staff after you have returned it to us. It is your responsibility to ensure that the proof has been read carefully. Translation errors between word-processor files and typesetting systems can occur so the whole proof needs to be read even if an electronic file has been supplied. Please pay particular attention to: tabulated material (this may have been rekeyed); equations; numerical data; figures and graphics; and references. If you have not already indicated the corresponding author(s) please mark their name(s) with an asterisk. Please fax or e-mail your corrections to us. When returning the proof by fax please also include a list detailing the corrections to be made. If responding by e-mail please send only a list of corrections -do not make any changes directly to the pdf file.This proof reflects the content and general style of the paper without the stylistic complexity of the final printed page; however, the only differences should be minor layout changes such as different line breaks, tables being double column instead of single column and improvements in graphic placement.We will endeavour to publish the article electronically on the RSC web site as soon as possible after we receive your corrections. NB: No late corrections can be made hence please ensure that only your final corrections are notified to us.Please return your final corrections, where possible within 48 hours of receipt, to:Serials Production, The Royal Society of Chemistry, Tel: +44 (0)1223 432345; Fax: +44 (0)1223 432160; E-mail: proofs@rsc.org Reprints -Electronic (PDF) reprints will be provided free of charge to the corresponding author. Enquiries about purchasing paper reprints should be addressed to: Production Operations Department (prodops@rsc.org). Costs for reprints are below: = An example of commercially important binary polymer blends is that of PC-PBT composites. The current knowledge of the physical, mechanical and chemical properties of these blends is reviewed and updated in the light of interpretations based on Lewis acid-base intermolecular interactions, as quantified by inverse gas chromatography, carried out under infinite dilution conditions. Reprint costs

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Inhibition of crystalline structure development in a reactive polycarbonate-poly(butyleneterephthalate) blend

Cited by 29 publications

References 0 publications

Influence of silicone phosphate on the transesterification in PBT/PC blends

Influence of silicone phosphate on the transesterification in PBT/PC blends

The effect of pigmentation on the mechanical properties and the crystallisation behaviour of polymer blends (Xenoy®)

Polymer blends: the PC–PBT case

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