Comparative study on low energy ion beam modification of thermoplastic polymers

P. M. Raveesha; K. Hareesh; S. D. Dhole; K. Asokan; Ganesh Sanjeev

doi:10.1080/10420150.2019.1596108

Comparative study on low energy ion beam modification of thermoplastic polymers

P. M. Raveesha
, K. Hareesh
, S. D. Dhole
, K. Asokan
, Ganesh Sanjeev^*

^*Corresponding author for this work

Department of Physics, Manipal Institute of Technology, Bengaluru

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Polycarbonate (PC) and polyethylene terephthalate (PET) thermoplastic polymer films were irradiated by low energy ion beams such as 100 keV Hydrogen (H⁺) ions and 350 keV Nitrogen (N⁺) ions at varied fluence from 1 × 10¹³ ions/cm² to 5 × 10¹⁴ ions/cm². The depth profile concentration of ions was calculated using Stopping and Range of Ions in Matter (SRIM) software code. Fourier Transform Infrared (FTIR) technique shows decrement in the intensity of peaks and disappearance of peaks mainly related to carbonyl stretching at 1770 cm⁻¹ and C–C stretching at 1500 cm⁻¹. Scanning electron microscopy (SEM) of irradiated polymers showed the formation of pores. X-ray diffraction (XRD) analysis has showed decrease in the intensity indicating the decrease in crystallinity after irradiation. Mechanical studies revealed that the molecular weight and microhardness decrease with increase in ion fluence due to increase in chain scission. The contact angle increased with increase in ion fluence indicating the hydrophobic nature of polymer after irradiation. Antibiofilm activity test of irradiated films shows resistance to Salmonella typhi (S. typhi) pathogen responsible for typhoid. The study shows that Nitrogen ion induces more damage compared to Hydrogen ions and PC films get more modified than PET films.

Original language	English
Pages (from-to)	406-418
Number of pages	13
Journal	Radiation Effects and Defects in Solids
Volume	174
Issue number	5-6
DOIs	https://doi.org/10.1080/10420150.2019.1596108
Publication status	Published - 03-06-2019

All Science Journal Classification (ASJC) codes

Radiation
Nuclear and High Energy Physics
General Materials Science
Condensed Matter Physics

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10.1080/10420150.2019.1596108

Cite this

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title = "Comparative study on low energy ion beam modification of thermoplastic polymers",

abstract = "Polycarbonate (PC) and polyethylene terephthalate (PET) thermoplastic polymer films were irradiated by low energy ion beams such as 100 keV Hydrogen (H+) ions and 350 keV Nitrogen (N+) ions at varied fluence from 1 × 1013 ions/cm2 to 5 × 1014 ions/cm2. The depth profile concentration of ions was calculated using Stopping and Range of Ions in Matter (SRIM) software code. Fourier Transform Infrared (FTIR) technique shows decrement in the intensity of peaks and disappearance of peaks mainly related to carbonyl stretching at 1770 cm−1 and C–C stretching at 1500 cm−1. Scanning electron microscopy (SEM) of irradiated polymers showed the formation of pores. X-ray diffraction (XRD) analysis has showed decrease in the intensity indicating the decrease in crystallinity after irradiation. Mechanical studies revealed that the molecular weight and microhardness decrease with increase in ion fluence due to increase in chain scission. The contact angle increased with increase in ion fluence indicating the hydrophobic nature of polymer after irradiation. Antibiofilm activity test of irradiated films shows resistance to Salmonella typhi (S. typhi) pathogen responsible for typhoid. The study shows that Nitrogen ion induces more damage compared to Hydrogen ions and PC films get more modified than PET films.",

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AU - Hareesh, K.

AU - Dhole, S. D.

AU - Asokan, K.

AU - Sanjeev, Ganesh

N1 - Funding Information: This work was supported by Board of Research in Nuclear Sciences (BRNS) [Grant Number No.34/14/73/2014-BRNS/10493 dated 17.06.2015]. Publisher Copyright: © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.

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N2 - Polycarbonate (PC) and polyethylene terephthalate (PET) thermoplastic polymer films were irradiated by low energy ion beams such as 100 keV Hydrogen (H+) ions and 350 keV Nitrogen (N+) ions at varied fluence from 1 × 1013 ions/cm2 to 5 × 1014 ions/cm2. The depth profile concentration of ions was calculated using Stopping and Range of Ions in Matter (SRIM) software code. Fourier Transform Infrared (FTIR) technique shows decrement in the intensity of peaks and disappearance of peaks mainly related to carbonyl stretching at 1770 cm−1 and C–C stretching at 1500 cm−1. Scanning electron microscopy (SEM) of irradiated polymers showed the formation of pores. X-ray diffraction (XRD) analysis has showed decrease in the intensity indicating the decrease in crystallinity after irradiation. Mechanical studies revealed that the molecular weight and microhardness decrease with increase in ion fluence due to increase in chain scission. The contact angle increased with increase in ion fluence indicating the hydrophobic nature of polymer after irradiation. Antibiofilm activity test of irradiated films shows resistance to Salmonella typhi (S. typhi) pathogen responsible for typhoid. The study shows that Nitrogen ion induces more damage compared to Hydrogen ions and PC films get more modified than PET films.

AB - Polycarbonate (PC) and polyethylene terephthalate (PET) thermoplastic polymer films were irradiated by low energy ion beams such as 100 keV Hydrogen (H+) ions and 350 keV Nitrogen (N+) ions at varied fluence from 1 × 1013 ions/cm2 to 5 × 1014 ions/cm2. The depth profile concentration of ions was calculated using Stopping and Range of Ions in Matter (SRIM) software code. Fourier Transform Infrared (FTIR) technique shows decrement in the intensity of peaks and disappearance of peaks mainly related to carbonyl stretching at 1770 cm−1 and C–C stretching at 1500 cm−1. Scanning electron microscopy (SEM) of irradiated polymers showed the formation of pores. X-ray diffraction (XRD) analysis has showed decrease in the intensity indicating the decrease in crystallinity after irradiation. Mechanical studies revealed that the molecular weight and microhardness decrease with increase in ion fluence due to increase in chain scission. The contact angle increased with increase in ion fluence indicating the hydrophobic nature of polymer after irradiation. Antibiofilm activity test of irradiated films shows resistance to Salmonella typhi (S. typhi) pathogen responsible for typhoid. The study shows that Nitrogen ion induces more damage compared to Hydrogen ions and PC films get more modified than PET films.

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Comparative study on low energy ion beam modification of thermoplastic polymers

Abstract

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