Electron beam irradiation of epoxidized natural rubber: FTIR studies

Ratnam, Chantara Thevy; Nasir, M.; Baharin, A.; Zaman, Khairul

doi:10.1002/1097-0126(200012)49:12<1693::aid-pi595>3.0.co;2-k

Cited by 38 publications

(29 citation statements)

References 25 publications

(21 reference statements)

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“…The spectrum of ENR-50 (Figure 4b) shows the stretching vibrations of epoxy and half epoxy at 1251 and 875 cm −1 respectively [26]. Moreover, a strong absorption band can be observed at 3020 cm −1 which is due to the –C=CH of isoprene.…”

Section: Resultsmentioning

confidence: 99%

Effect of Organo-Modified Nanoclay on the Thermal and Bulk Structural Properties of Poly(3-hydroxybutyrate)-Epoxidized Natural Rubber Blends: Formation of Multi-Components Biobased Nanohybrids

Salehabadi

Bakar

2014

Materials

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Multi-component nanohybrids comprising of organo-modified montmorillonite (MMT) and immiscible biopolymer blends of poly(3-hydroxybutyrate) (PHB) and epoxidized natural rubber (ENR-50) were prepared by solvent casting technique. The one and three dimensional morphology of PHB/ENR-50/MMT systems were studied using Polarizing Optical Microscopy (POM) and Scanning Electron Microscopy (SEM). Differential scanning calorimetry (DSC) technique was used to evaluate the thermal properties of the nanohybrids. The melting temperature (Tm) and enthalpy of melting (ΔHm) of PHB decrease with respect to the increase in ENR-50 as well as MMT content. The non-isothermal decomposition of the nanohybrids was studied using thermogravimetric (TG-DTG) analysis. FTIR-ATR spectra supported ring opening of the epoxide group via reaction with carboxyl group of PHB and amines of organic modifier. The reaction mechanism towards the formation of the nanohybrids is proposed.

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Section: Resultsmentioning

confidence: 99%

Effect of Organo-Modified Nanoclay on the Thermal and Bulk Structural Properties of Poly(3-hydroxybutyrate)-Epoxidized Natural Rubber Blends: Formation of Multi-Components Biobased Nanohybrids

Salehabadi

Bakar

2014

Materials

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“…However, looking at the changes in Ts with irradiation dose for PVC, ENR and 50/50 PVC/ENR blend, it is clear that the trend is not the same. [25,30] Thus the Ts results show that both PVC and ENR phases have the tendency to crosslink upon irradiation of the blend at varying extent. The observed decline in Ts above the optimum dose is believed to be associated with the embrittlement of the blends due to high extent of crosslinking.…”

Section: Tensile Strengthmentioning

confidence: 87%

“…[22] It was found that the enhancement in PVC/ENR blend properties upon irradiation is attributed to irradiation-induced crosslinking. [23] Dynamic mechanical properties [24] and Fourier transform infrared spectroscopy studies [25] of ENR have provided further insight into the possible involvement of the rubber phase in the crosslinking reaction. [23] Dynamic mechanical properties [24] and Fourier transform infrared spectroscopy studies [25] of ENR have provided further insight into the possible involvement of the rubber phase in the crosslinking reaction.…”

Section: Introductionmentioning

confidence: 99%

Irradiation Crosslinking of PVC/ENR Blend: A Comparative Study with the Respective Homopolymers

Ratnam¹

2001

Macromol. Mater. Eng.

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“…For its completion, films with sufficient transparency were obtained through dissolution with chloroform and subsequently dried to remove all solvent. The methyl deformation band at 1382 cm −1 was chosen as an internal standard for the quantitative analysis . The quantitative calculation of epoxy group content was used the ratio of peak area in 1250 and 1382 cm −1 , which represent the characteristic band of epoxy group and methyl deformation band respectively (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Solution epoxidized trans‐1,4‐polyisoprene (ETPI) is a modified TPI that usually carried out in‐suit by peroxy formic acid and there are many reports suggest that m ‐chloroperbenzoic acid was used as reagent of epoxidization . Many works are focused on researching the effect of epoxidation of trans‐1,4‐polyisoprene (TPI) on the glass transition temperature ( T g ) , crystallization of the polymer , and the thermodynamic property also has been investigated .…”

Section: Introductionmentioning

confidence: 99%

The composition and morphology of epoxidized trans-1,4-polyisoprene obtained by heterogeneous synthesis method

Shao

Yao

et al. 2013

Polym Eng Sci

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The aim of this study is to analyze the structure and morphology of epoxidized trans-1,4-polyisoprene (ETPI) obtained by water phase suspension epoxidation. With this objective, the range of epoxy group content of ETPI from 0 to 25 mol% was used. The Fourier transform infrared spectroscopy indicated that the dissoluble parts separated by ethyl acetate were epoxidized molecular chain while the insoluble parts were unreacted TPI segment. In addition, gel permeation chromatography has been used to research the change of the relative molecular weight and the the molecular weight distribution due to the effect of epoxy group content. The decrease of molecular weight states that there have small amounts of chain scission in the epoxidation reaction process. DSC data proved that the glass transition temperature raised because of the increase in rotating free energy. The decrease of DH m , DH c , and T c indicated that crystallinity and the rate of crystallization are reduced. The mechanical properties of ETPI showed that the tensile strength and hardness reduced gradually. Finally, a morphological study of ETPI has been completed using phase contrast microscope and scanning electron microscopy. POLYM. ENG.

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Electron beam irradiation of epoxidized natural rubber: FTIR studies

Cited by 38 publications

References 25 publications

Effect of Organo-Modified Nanoclay on the Thermal and Bulk Structural Properties of Poly(3-hydroxybutyrate)-Epoxidized Natural Rubber Blends: Formation of Multi-Components Biobased Nanohybrids

Effect of Organo-Modified Nanoclay on the Thermal and Bulk Structural Properties of Poly(3-hydroxybutyrate)-Epoxidized Natural Rubber Blends: Formation of Multi-Components Biobased Nanohybrids

Irradiation Crosslinking of PVC/ENR Blend: A Comparative Study with the Respective Homopolymers

The composition and morphology of epoxidized trans-1,4-polyisoprene obtained by heterogeneous synthesis method

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