Non‐isothermal cold crystallization kinetics and morphology of PET + SAN blends

Wellen, Renate Maria Ramos; Rabello, Marcelo S.

doi:10.1002/app.31620

Cited by 10 publications

(1 citation statement)

References 32 publications

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“…From previous work we know that blending a small amount of an amorphous polymer may hinder unwelcomed cold crystallization of PET and prevent excessive crystallinity under processing conditions. Thus, polystyrene, an apolar amorphous polymer appears to be a good candidate 12,[15][16][17][18][19][20][21] . The present work is concerned with an investigation of the melting and nonisothermal cold crystallization of PET and PET/PS blends with 1 to 60% of PS content.…”

Section: Introductionmentioning

confidence: 99%

Effect of polystyrene on poly(ethylene terephthalate) crystallization

Wellen

2014

Mat. Res.

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Blends of poly(ethylene terephthalate) (PET) and polystyrene (PS) with PS content ranging from 0% to 60% by weight, were compounded in a laboratory internal mixer, followed by quenching into iced water, resulting in substantially amorphous compounds. Blend morphology was analyzed by scanning electron microscopy (SEM). Standard differential scanning calorimetry (DSC) was used to study the cold crystallization and melting behavior of PET and PET/PS blends. SEM micrographs show a two-phase structure made up with spherical PS particles dispersed in a PET matrix. DSC scans showed that crystallization of PET is affected by the heating rate and by the addition of even small amounts of PS. In particular, the rate of cold crystallization of PET is significantly reduced by the incorporation of 1% of PS, attributed to the anti-nucleating effect of PS on PET. The amount of PET crystallized and the melting characteristics (temperature, rate) are not significantly affected by either PS content or heating rate.

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Section: Introductionmentioning

confidence: 99%

Effect of polystyrene on poly(ethylene terephthalate) crystallization

Wellen

2014

Mat. Res.

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Polymer Additives

Pfaendner

2013

Handbook of Polymer Synthesis, Characterization, and Processing

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Additives are essential components in polymer formulations to maintain and to extend polymer properties. Many additive classes are seen today as commodities and standard products, available from different manufacturers and applied in many use areas. This chapter presents the most important classes of additives as well as general information on chemical structures and mechanisms, on testing methods, and on use examples in selected polymer classes. The additive classes are antioxidants, poly vinylidene chloride (PVC) heat stabilizers, light stabilizers, flame retardants, plasticizers, and scavenging agents. The chapter also talks about other additives to enhance processing, modify plastic surface properties, modify polymer chain structures, influence morphology and crystallinity of polymers, and enhance thermal conductivity. The other topics covered in this chapter are active protection additives, antimicrobials, odor masking, animal repellents, markers, and blowing agents

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Achieving Balanced Crystallinity of Donor and Acceptor by Combining Blade‐Coating and Ternary Strategies in Organic Solar Cells

et al. 2018

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As a prototype tool for slot‐die coating, blade‐coating exhibits excellent compatibility with large‐area roll‐to‐roll coating. A ternary organic solar cell based on PBDB‐T:PTB7‐Th:FOIC blends is fabricated by blade‐coating and exhibits a power conversion efficiency of 12.02%, which is one of the highest values for the printed organic solar cells in ambient environment. It is demonstrated that blade‐coating can enhance crystallization of these three materials, but the degree of induction is different (FOIC > PBDB‐T > PTB7‐Th). Thus, the blade‐coated PBDB‐T:FOIC device presents much higher electron mobility than hole mobility due to the very high crystallinity of FOIC. Upon the addition of PTB7‐Th into the blade‐coated PBDB‐T:FOIC blends, the crystallinity of FOIC decreases together with the corresponding electron mobility, due to the better miscibility between PTB7‐Th and FOIC. The ternary strategy not only maintains the well‐matched crystallinity and mobilities, but also increases the photocurrent with complementary light absorption as well as the Förster resonant energy transfer. Furthermore, small domains with homogeneously distributed nanofibers are observed in favor of the exciton dissociation and charge transport. This combination of blade‐coating and ternary strategies exhibits excellent synergistic effect in optimizing morphology, showing great potential in the large‐area fabrication of highly efficient organic solar cells.

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Non‐isothermal cold crystallization kinetics and morphology of PET + SAN blends

Cited by 10 publications

References 32 publications

Effect of polystyrene on poly(ethylene terephthalate) crystallization

Effect of polystyrene on poly(ethylene terephthalate) crystallization

Polymer Additives

Achieving Balanced Crystallinity of Donor and Acceptor by Combining Blade‐Coating and Ternary Strategies in Organic Solar Cells

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