Structure–property relationships for sulfonated poly(butylene terephthalate)

Chisholm, Bret J.; Richards, W. Lance; Banach, T. E.; Soloveichik, Sofia; Kelley, James F.; Bradtke, Greg R.; Dhawan, Sandeep

doi:10.1002/app.23302

Cited by 2 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Crystallization kinetics have been shown to be slowed significantly for a number of different semicrystalline ionomers, for example, ethylene-methacrylic acid copolymer ionomers (EMAA) [36], syndiotactic sulfonated polystyrene (SPS) [37,38], sulfonated poly(butylene terephthalate) [39], sulfonated telechelic polyethylene terephthalate [40]. The most comprehensive study was carried out by Moore and coworkers [37], who showed that the rate of crystallization in syndiotactic SPS ionomers above a certain crystallization temperature was dependent on the neutralizing cation, while below a certain temperature the rate was independent of neutralizing cation.…”

Section: Ionomer Synthesismentioning

confidence: 99%

Review and critical analysis of the morphology of random ionomers across many length scales

Grady

2008

Polymer Engineering & Sci

101

View full text Add to dashboard Cite

This review presents a description of what is known about ionomer morphology. All papers on ionomer morphology are not included in this review; but all relevant questions about ionomer morphology are posed and answered as completely as possible. The review is critical; that is, reasons are given for morphologies that are deemed to be more or less likely. The review is organized along three length scales: sub-nanometer, nanometer to 10 nm, and greater than 10 nm. Within each length scale, all three phases are considered: crystalline, amorphous, and ionic aggregate. The purity of the three phases, the arrangement of atoms in the three phases, the size and shape of the three phases, and their arrangements in space relative to each other are explored in this review. A model for the shape of aggregates in ionomers that have well-ordered internal environments is presented. This model proposes that aggregates are fundamentally planar, but will ''roll up'' into tubes or other related structures in order to reduce the number of atoms at aggregate edges. This model was developed primarily based on the varied morphologies ionomers have shown in electron micrographs, but is consistent with other indirect measurements of ionomer morphology.

show abstract

Section: Ionomer Synthesismentioning

confidence: 99%

Review and critical analysis of the morphology of random ionomers across many length scales

Grady

2008

Polymer Engineering & Sci

101

View full text Add to dashboard Cite

show abstract

“…Zmienia siê zarówno kinetyka, jak i termodynamika krystalizacji, a tak-¿e morfologia modyfikowanego polimeru. Jak stwierdzono [1][2][3][4][5][6], kopolimery statystyczne, zawieraj¹ce w ³añcuchach, obok merów zdolnych do krystalizacji (me-rów typu A) nawet niewielk¹ liczbê merów niezdolnych do krystalizacji (merów typu B), wykazuj¹ -w porównaniu z homopolimerem typu A -m.in. wy¿sz¹ temperaturê zimnej krystalizacji, ni¿sz¹ temperaturê topnienia i mniejszy stopieñ krystalicznooeci.…”

unclassified

Non-isothermal crystallization from the melt of sulfonated poly(ethylene terephthalate)

Ostrowska-Gumkowska¹,

Ostrowska-Czubenko²

2010

Polimery

View full text Add to dashboard Cite

Streszczenie-Przeanalizowano wp³yw kopolimeryzacji na podstawowe parametry procesu nieizotermicznej krystalizacji ze stopu i na topnienie anionowo modyfikowanego poli(tereftalanu etylenu) (K-X/SPET), zawieraj¹cego 1,9-10,1 % mol. grup sulfonowych. W badaniach wykorzystano ró¿nicow¹ kalorymetriê skaningow¹ (DSC). Wykazano istotn¹ zale¿nooeae budowy chemicznej ³añcucha kopoliestru i szybkooeci ch³odzenia stopu polimeru na przebieg procesu krystalizacji i topnienia. Wyznaczono parametry kinetyczne procesu krystalizacji metodami Khanna, Liu i wspó³pr. oraz energiê aktywacji tego procesu metod¹ Kissingera. Przedyskutowano wp³yw stê¿enia grup jonowych oraz ich asocjacji na przebieg procesów krystalizacji i topnienia badanych polimerów jonowych. S³owa kluczowe: jonomer poliestrowy, krystalizacja nieizotermiczna, topnienie, DSC. NON-ISOTHERMAL CRYSTALLIZATION FROM THE MELT OF SULFONATED POLY(ETHY-LENE TEREPHTHALATE) Summary-The influence of copolymerization on the basic parameters of the nonisothermal crystallization process from the melt (Figs. 1, 4), and also on the melting behavior (Fig. 7) of anionically modified poly(ethylene terephthalate) (K-X/SPET, Table 1) containing 1.9-10.1 % mol sulfonate groups has been studied. The obtained samples were studied by differential scanning calorimetry. It was observed that the crystallization process (Figs. 2, 3, 5, 6) and melting (Fig. 7) are crucially dependent on the structure of the chemical chain of the copolyester and the cooling rate of the polymer melt. The kinetic parameters for the crystallization process were determined by the Khanna and Liu method while the activation energy for the process according to the Kissinger method. The influence of concentration of ionic groups and the association phenomenon of these groups on the crystallization process (Tables 2, 4-6) as well as the melting of the studied ionic polymers (Tables 3, 7) was discussed.

show abstract

Structure–property relationships for sulfonated poly(butylene terephthalate)

Cited by 2 publications

References 17 publications

Review and critical analysis of the morphology of random ionomers across many length scales

Review and critical analysis of the morphology of random ionomers across many length scales

Non-isothermal crystallization from the melt of sulfonated poly(ethylene terephthalate)

Contact Info

Product

Resources

About