Spectroscopic studies of copper and carbon ion irradiated polypropylene

The samples of polypropylene (PP) have been irradiated with 120 MeV 64Cu9+ and 70 MeV 12C5+ ion beams, with the fluence ranging from 1 × 1013 to 1 × 1011 ions/-cm–2. UV-VIS and FTIR techniques have been used to study the chemical and optical properties of these irradiated polymers. UV spectra revealed that the optical-gap energy decreases by 54 % with copper ion irradiation at the fluence of 1 × 1013 ions/cm2, whereas at the same fluence, carbon beam decreases the optical-gap energy by 20%. FTIR analysis of ion irradiated samples revealed the presence of –OH, C = O and C = C bonds. Alkyne formation has been observed only in the case of copper ion irradiation.Ravinder Singh, Kawaljeet Singh Samra, Ramneek Kumar and Lakhwant Singh* Department of Physics, Guru Nanak Dev University, Amritsar-143 005, Punjab, India E-mail : [email protected] of Physics, Guru Nanak Dev University, Amritsar-143 005, Punjab, Indi

UBC Food Systems Project: Exploring Ways to Lighten the Ecological Footprint of Blue Chip Cookies

Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”Land and Food Systems, Faculty ofUnreviewedUndergraduat