Biotreatment effects in films and blends of PVC/PCL previously treated with heat

Campos, Adriana de; Franchetti, Sandra Mara Martins

doi:10.1590/s1516-89132005000200010

Cited by 22 publications

(15 citation statements)

References 17 publications

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“…The spectra indicate an absorption band centered around 280 nm, which is characteristic of PCL and related to carbonyl groups (C=O) [23]. This is confirmed in FTIR at about 1726 cm −1 band which is assigned to π-π* transition, and the sharp edge in the range of 245-270 nm, which is shifted toward the longer wavelength with increasing PCL concentration.…”

Section: Uv-vis Spectroscopic Analysismentioning

confidence: 58%

Spectroscopic studies and thermal properties of PCL/PMMA biopolymer blend

Abdelrazek

Hezma²,

El‐Khodary

et al. 2016

Egyptian Journal of Basic and Applied Sciences

140

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Available online A B S T R A C TPolycaprolactone/Polymethylmethacrylate (PCL/PMMA) biopolymer blend can be prepared by casting technique. Structural, optical and thermal properties of the blend have been studied using X-ray diffraction (XRD), infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis) and thermogravimetric analysis (TGA). XRD show two diffraction peaks at 2θ = 21.4°a nd 23.8°which attributed to the planes (110) and (200) that represent crystallographic planes of semi-crystalline PCL, respectively, where PMMA revealed a broad amorphous hump observed around 2θ = 15°. The FTIR spectra showed some variations in the position and intensity of some absorption bands which reveal an interaction and good miscibility between the two polymers. TGA suggested that the thermal stability increases with increasing PCL concentration; this indicates the incorporation of PCL into the host. Approximately the pure PCL mass loss remains constant until complete decomposition occurs at about 430°C, whereas PMMA complete decomposition occurs at about 400°C. So, decomposition temperature of PCL is higher than PMMA by nearly 30°C.

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Section: Uv-vis Spectroscopic Analysismentioning

confidence: 58%

Spectroscopic studies and thermal properties of PCL/PMMA biopolymer blend

Abdelrazek

Hezma²,

El‐Khodary

et al. 2016

Egyptian Journal of Basic and Applied Sciences

140

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“…This drop was illuminated from the side and its image magnified and projected onto a white screen, where the contact angle was measured. The procedure was repeated 3 times and the mean and standard deviation were calculated from these measurements [20] . Films post-biotreatment were washed with distilled water, dried with filter paper and kept in desiccator during 48 hours before the contact angle analysis.…”

Section: Films Characterizationmentioning

confidence: 99%

The influence of soil and landfill leachate microorganisms in the degradation of PVC/PCL films cast from DMF

2012

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While the use of plastics continues to increase in our daily lives in a growing range products, these materials are very persistent in the environment. The blending of aliphatic polyesters with other thermoplastic polymers is a profitable way of producing materials with changed physical properties and biodegradability, which can facilitate microbial adhesion to the polymer matrix and help to reduce (post-consumer) degradation time of these materials in landfills. This study was an investigation of the biodegradation of films of blends of poly(vinyl chloride (PVC) and poly(ε-caprolactone) (PCL) by soil microorganisms and leachate, by means of respirometry, infrared absorption spectroscopy (FTIR), differential calorimetry scanning (DSC), scanning electron microscopy (SEM), contact angle and weight loss. The results showed that in the soil, the films suffered oxidative biodegradation. The PCL promoted degradation of the PVC in the film of PVC/PCL and the PVC inhibited the rapid degradation of the PCL.

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“…Its adoption of a laminar structure in the solid state ( Fig. 3) makes it suitable for sandwiching 3 and coating 4 and it is commonly used in this way for sustained release of drugs from pharmaceutical dosage forms.…”

Section: Introductionmentioning

confidence: 99%

The mechanism and energy of activation of the melting of poly (ε‐caprolactone) with and without prior treatment with span 80

Fraga

Martínez-Ageitos

Rodríguez‐Núñez

et al. 2011

J of Applied Polymer Sci

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Biotreatment effects in films and blends of PVC/PCL previously treated with heat

Abstract: Studies were carried out on biomodification and the pre-heat (130 0 C) influence on Poly (vinyl chloride) / Poly (ε-caprolactone) films. The results showed that heat pre-treatment improved the biomodification of PVC films, but it inhibited the biomodification of the PVC/PCL film.

Cited by 22 publications

References 17 publications

Spectroscopic studies and thermal properties of PCL/PMMA biopolymer blend

Spectroscopic studies and thermal properties of PCL/PMMA biopolymer blend

The influence of soil and landfill leachate microorganisms in the degradation of PVC/PCL films cast from DMF

The mechanism and energy of activation of the melting of poly (ε‐caprolactone) with and without prior treatment with span 80

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