The Effects of Compatibilizers on the Morphological, Mechanical, and Optical Properties of Biaxially Oriented Poly(ethylene terephthalate)/Syndiotactic Polystyrene Blend Films

Han, Kweon Hyung; Jang, Myung Geun; Juhn, Kyu Jin; Cho, Choonglai; Kim, Woo Nyon

doi:10.1007/s13233-018-6039-7

Cited by 13 publications

(3 citation statements)

References 29 publications

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Section: Resultsmentioning

confidence: 99%

“…While PC and PET are less expensive than CLPI and their molecular compositions differ from that of CLPI, PC, and PET were chosen for comparison because they are frequently used engineering plastics for optical and electronic applications owing to their good optical and mechanical properties. [54,[75][76][77][78] It has been reported that dianhydride and diacyl halide monomers are responsible for creating the imide and amide groups in the CLPI-X chain, respectively. [45,58,59] The yellowish color of PI originates from the formation of CTCs due to the presence of imide moieties.…”

Section: Mechanical and Optical Properties And Folding Reliabilitymentioning

confidence: 99%

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Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

Ahn

Kim

Hong

et al. 2022

Adv Funct Materials

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The development of flexible displays and electronics is hindered by the disadvantages of polymeric window films, such as low mechanical strength, poor optical properties, and lack of folding and rolling reliability. To overcome these critical limitations, a novel colorless polyimide window film is prepared in this study using the concept of charge‐transfer complex (CTC) intensification. The resulting window film has a tensile modulus of 8.4 GPa, total transmittance of ≈90%, and yellow index below 3, which is the best recorded balance between mechanical strength and optical properties for a highly flexible optical film. Unlike commercially available optical‐grade engineering plastic films and glass substrates, the prepared window film has both pencil hardness grade over 2H and folding reliability over 200 000 folding/unfolding cycles. These remarkable properties are attributed to the unique supramolecular structure with multiple hydrogen bonding and salt complexation interactions, which exhibits CTC intensification. The CTC intensification mechanism is also proposed in this study.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical and Optical Properties And Folding Reliabilitymentioning

confidence: 99%

Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

Ahn

Kim

Hong

et al. 2022

Adv Funct Materials

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“…The purpose of biaxial stretching mainly includes two points: (1) full stretch and orientation of the polymer molecular chains by biaxial stretching, which is beneficial to obtain high crystallinity and high breakdown strength for polymer films; (2) polymer films with uniform thickness formed by biaxial stretching, which could meet the uniform electric field distribution under the working voltage. Most of the dielectric polymers dedicated for film capacitors can be fabricated using the biaxial orientation process, including BOPP, biaxially oriented polyethylene terephthalate (BOPET), biaxially oriented polystyrene (BOPS), biaxially oriented poly(ethylene naphthalate) (BOPEN), biaxially oriented polyphenylene sulfide (BOPPS), and even biaxially oriented poly(vinylidene fluoride) (BOPVDF). − Through the biaxial stretching treatment, the polymer film usually has a uniform thickness, fewer defects, improved tensile strength, and, most importantly, the enhanced breakdown strength owing to the ordered alignment of polymer chains. Besides, the thickness of polymer films could be reduced through biaxial stretching.…”

Section: Large-scale Production Of Energy Storage Film Capacitorsmentioning

confidence: 99%

Recent Progress and Future Prospects on All-Organic Polymer Dielectrics for Energy Storage Capacitors

et al. 2021

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With the development of advanced electronic devices and electric power systems, polymer-based dielectric film capacitors with high energy storage capability have become particularly important. Compared with polymer nanocomposites with widespread attention, all-organic polymers are fundamental and have been proven to be more effective choices in the process of scalable, continuous, and large-scale industrial production, leading to many dielectric and energy storage applications. In the past decade, efforts have intensified in this field with great progress in newly discovered dielectric polymers, fundamental production technologies, and extension toward emerging computational strategies. This review summarizes the recent progress in the field of energy storage based on conventional as well as heat-resistant all-organic polymer materials with the focus on strategies to enhance the dielectric properties and energy storage performances. The key parameters of all-organic polymers, such as dielectric constant, dielectric loss, breakdown strength, energy density, and charge–discharge efficiency, have been thoroughly studied. In addition, the applications of computer-aided calculation including density functional theory, machine learning, and materials genome in rational design and performance prediction of polymer dielectrics are reviewed in detail. Based on a comprehensive understanding of recent developments, guidelines and prospects for the future development of all-organic polymer materials with dielectric and energy storage applications are proposed.

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Synthesis of Styrenic Triblock Copolymer and its Application in Polyester Blends

Rao

Suriya

Yeolekar

et al. 2021

Macromolecular Symposia

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It is expected that there will be covalent bond between -OH (hydroxyl) terminal end group in PET with carboxylic groups present in PS-b-PBA-b-P(S-co-AA), PS will get disperse in PS block of PS-b-PBA-b-P(S-co-AA)and blend could show interesting properties. [11][12][13][14] One among the most vital goals in synthesis of polymer is to procure control over not just the molecular weight of polymer and poly dispersity index but also their composition, structure, and end group functionalities. [15] Living polymerization is likely to be the efficient and simple technique to reach the goal. Synthesis of polymers through anionic, cationic, or any other polymerizations require specific experimental conditions and complex catalysts, which are sensitive toward moisture and air. [16,17] In turn, their industrial and economical application will be difficult. The radical polymerization has emerged with a great control over molecular weight and the polydispersity index and has also come up with advent of controlled radical polymerization techniques. [18] Through controlled radical polymerization (CRP), it becomes efficient to synthesize block copolymers with good architecture and with controlled molecular weights. [19] Atom Transfer Radical Polymerization is one such technique among the CRPs where a reversible halogen atom transfer step takes place in which the halide group from the alkyl halide reacts with transition metal halide and generates a radical. The lower oxidation state metal turns into higher oxidation state by expanding its coordination sphere. The higher oxidation state metal then deactivates the growing radical to generate a dormant chain and the lower oxidation state metal. This process happens continuously till the equilibrium reaches. Since the initiation and deactivation is fast, the polymer obtained is of controlled molecular weight (Figure 1). [20][21][22][23][24] Experimental Section MaterialsBottle grade PET, Relpet G5801 was kindly supplied by Reliance Industries Ltd., and PS, SC 205 from Supreme Petrochem Ltd. Tertiary Butyl acrylate monomer (98%) was obtained from Lancaster and styrene monomer (99%) from Merck. Both the monomers were purified before use. The catalyst, copper bromide (CuBr) (98%), initiator, Ethyl 2-bromoisobutyrate (98%),

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The Effects of Compatibilizers on the Morphological, Mechanical, and Optical Properties of Biaxially Oriented Poly(ethylene terephthalate)/Syndiotactic Polystyrene Blend Films

Cited by 13 publications

References 29 publications

Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

Highly Transparent, Colorless Optical Film with Outstanding Mechanical Strength and Folding Reliability Using Mismatched Charge‐Transfer Complex Intensification

Recent Progress and Future Prospects on All-Organic Polymer Dielectrics for Energy Storage Capacitors

Synthesis of Styrenic Triblock Copolymer and its Application in Polyester Blends

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