Liquid-induced crystallization of a bisphenol-A polycarbonate

Turska, E.; Janeczek, Henryk

doi:10.1016/0032-3861(79)90123-x

Cited by 31 publications

(21 citation statements)

References 13 publications

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“…The increased mobility of the amorphous phase leads to crystallization. The crystallization of polycarbonates (amorphous polymers) using various diluents has been well studied 24–28. The solubility parameter of a particular polymer determines the extent of interaction between the polymer and a particular diluent.…”

Section: Resultsmentioning

confidence: 97%

Crystallization and solid‐state polymerization of poly(aryl ester)s

James

Ramesh

Sivaram

2004

Polymer International

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The crystallization and solid‐state polymerization (SSP) of poly(aryl ester)s was investigated. Oligomers with different end‐groups were prepared by degradation of commercially available poly(aryl ester)s. The SSP of these oligomers was carried out after crystallization and under reduced pressure, in the presence of various catalysts. Polymers were characterized by means of their inherent viscosities and thermal properties. It has been found that Ti(OiPr)4 was a better catalyst for SSP. The structures and morphologies of semicrystalline poly(aryl ester)s were investigated by X‐ray diffraction and differential scanning calorimetry (DSC). Copyright © 2004 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 97%

Crystallization and solid‐state polymerization of poly(aryl ester)s

James

Ramesh

Sivaram

2004

Polymer International

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“…Polycarbonate is a well-established polymer for display applications. Generally, polycarbonate is not crystallized by cooling it from the molten state; however, it could be crystallized by contact with certain solvents [8][9][10][11]. Polycarbonate spherulites could be produced by solvent-induced crystallization (SIC).…”

Section: Introductionmentioning

confidence: 99%

Antiglare Layer Formation on Polycarbonate Sheet Using UV-Curable Resin-induced Crystallization and Subsequent CO<sub>2</sub> Gas Foaming

Taki

Niinuma

Hariu

et al. 2017

J. Photopol. Sci. Technol.

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A low-reflectance film was used to reduce the reflection of light from the displays of electronic devices (personal computers, televisions, smartphones, etc.). In this study, an ultraviolet (UV)-curable resin was used to form a nano/microstructure by organic-solvent-induced crystallization and to fill the cracks in the polycarbonate plate. Two different processes were examined: Process 1: the surface of the polycarbonate plate was crystallized at 40, 60, 80, or 100 °C for 10 min and thoroughly rinsed with isopropyl alcohol; and Process 2: the surface of the polycarbonate plate was crystallized at 40 °C for a desired time. The excess UV-curable resin was removed by UV-induced curing and CO2 foaming during UV exposure using high-pressure CO 2 equipment. CO 2 pressures of 4.5, 5.5, and 6.5 MPa and CO 2 impregnation times of 80, 160, 240 s were investigated to optimize the microstructure. It was clarified that spherulites of polycarbonate existed on the surface by differential scanning calorimetry and scanning electron microscopy. The surface prepared with Process 2 had a relative reflectance that was about 600 and 30 times lower than those of the untreated polycarbonate plate and a commercially available low-reflectance film, respectively.

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“…treated the PC samples thermally, by heating till 190°C for seven days, in order to get a low degree of crystallization, which is 23% on average. It was demonstrated that the best organic solvent which can induce the PC crystallization process efficiently is the acetone …”

Section: Introductionmentioning

confidence: 99%

Surface and wetting characteristics of textured bisphenol‐A based polycarbonate surfaces: Acetone‐induced crystallization texturing methods

Owais

Khaled

Yilbaş

et al. 2015

J of Applied Polymer Sci

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Polycarbonate (PC) sheet is a promising material for facile patterning to induce hydrophobic self-cleaning and dust repelling properties for photovoltaic panels' protection. An investigation to texture PC sheet surfaces to develop a self-cleaning structure using solvent induced-crystallization is carried out using acetone. Acetone is applied in both liquid and vapor states to generate a hierarchically structured surface that would improve its contacts angle and therefore improve hydrophobicity. The surface texture is investigated and characterized using atomic force microscopy, contact angle technique (Goniometer), optical microscopy, ultravioletvisible spectroscopy (UV-vis) and Fourier transform infrared spectroscopy. The findings revealed that the liquid acetone-induced crystallization of PC surface leads to a hierarchal and hydrophobic surface with an average contact angle of 1358 and average transmittance <2%. However, the acetone vapor induced-crystallization results in a slightly hydrophilic hierarchal textured surface with high transmittance; in which case, average contact angle of 898 and average transmittance of 69% are achieved. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43074.

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Liquid-induced crystallization of a bisphenol-A polycarbonate

Cited by 31 publications

References 13 publications

Crystallization and solid‐state polymerization of poly(aryl ester)s

Crystallization and solid‐state polymerization of poly(aryl ester)s

Antiglare Layer Formation on Polycarbonate Sheet Using UV-Curable Resin-induced Crystallization and Subsequent CO<sub>2</sub> Gas Foaming

Surface and wetting characteristics of textured bisphenol‐A based polycarbonate surfaces: Acetone‐induced crystallization texturing methods

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