Abstract
The effect of UV radiation on the thermal, structural and mechanical properties of Bayfol CR6-2 polymer samples has been investigated. These samples were exposed to different energy fluences of UV in the range 10-200 J/cm2. Simultaneous thermogravimetric analysis (TGA) and differential thermal analysis (DTA) have been performed on Bayfol samples of 0.3 mm thickness. The structural modifications in the UV irradiated Bayfol samples have been studied as a function of fluence using Fourier Transform Infrared spectroscopy. In addition, the mechanical properties of the irradiated and non irradiated samples were studied. The results indicate that the irradiation of Bayfol polymer at the fluence range 130-200 J/cm2, leads to cross-linking process that strengthens the polymer against thermal degradation. The results of FTIR and mechanical measurements indicated that the scission takes place at the carbonate site with the formation of hydroxyl group. Also, at the fluence range 0-130 J/cm2, the standard chains and a great number of chain ends weaken and the material may become softer. This paper also reviews recent developments along with some patents. It concentrates on solving the low thermal stability of the material due to some structural defects during polymerization process. The attempts to decrease these defects and improving the thermal stability help in using these materials in industry applications.
Keywords: UV irradiation, polycarbonate, FTIR, thermal, &, mechanical properties
Recent Patents on Mechanical Engineering
Title: Improvement of the Mechanical and Thermal Properties of Bayfol CR6-2 Polymer using UV Radiation
Volume: 3 Issue: 1
Author(s): Elham M. Sakr
Affiliation:
Keywords: UV irradiation, polycarbonate, FTIR, thermal, &, mechanical properties
Abstract: The effect of UV radiation on the thermal, structural and mechanical properties of Bayfol CR6-2 polymer samples has been investigated. These samples were exposed to different energy fluences of UV in the range 10-200 J/cm2. Simultaneous thermogravimetric analysis (TGA) and differential thermal analysis (DTA) have been performed on Bayfol samples of 0.3 mm thickness. The structural modifications in the UV irradiated Bayfol samples have been studied as a function of fluence using Fourier Transform Infrared spectroscopy. In addition, the mechanical properties of the irradiated and non irradiated samples were studied. The results indicate that the irradiation of Bayfol polymer at the fluence range 130-200 J/cm2, leads to cross-linking process that strengthens the polymer against thermal degradation. The results of FTIR and mechanical measurements indicated that the scission takes place at the carbonate site with the formation of hydroxyl group. Also, at the fluence range 0-130 J/cm2, the standard chains and a great number of chain ends weaken and the material may become softer. This paper also reviews recent developments along with some patents. It concentrates on solving the low thermal stability of the material due to some structural defects during polymerization process. The attempts to decrease these defects and improving the thermal stability help in using these materials in industry applications.
Export Options
About this article
Cite this article as:
Sakr M. Elham, Improvement of the Mechanical and Thermal Properties of Bayfol CR6-2 Polymer using UV Radiation, Recent Patents on Mechanical Engineering 2010; 3 (1) . https://dx.doi.org/10.2174/2212797611003010045
DOI https://dx.doi.org/10.2174/2212797611003010045 |
Print ISSN 2212-7976 |
Publisher Name Bentham Science Publisher |
Online ISSN 1874-477X |
Call for Papers in Thematic Issues
Emerging Methods and Techniques in Sustainable Manufacturing and Materials Processing
Sustainability in manufacturing practices to process materials is a globally accepted mandate and it consists of ecofriendly strategies and methods such as processing, synthesis, fabrication, process optimization by experimental, numerical and computational approaches to test, evaluate the performance and reliability of different materials. The success in enhancement of materials processing ...read more
Micro-/Nano-scale Heat Transfer and Flow
Micro-/Nano-scale heat transfer and flow are seen in many mechanical and electronic equipment and systems, and thus have attracted a great deal of attention. With advances in manufacturing technologies, an increasing number of microstructures have been used to control the micro-/nano-scale heat transfer and flow in recent decades. For example, ...read more
Opportunities of Emerging Materials Processing for Enhanced Manufacturing in Industry 4.0
This proposed special issue aims to explore the transformative potential of emerging materials processing techniques in the context of Industry 4.0, focusing on the opportunities they present for enhancing manufacturing processes. As Industry 4.0 continues to revolutionize the global manufacturing landscape, the integration of cutting-edge materials processing technologies becomes paramount ...read more
Recent Advances in Mechanical Engineering and Nanomaterials
Recent Advances in Mechanical Engineering and Nanomaterials (RAMEN) includes all the major fields in Mechanical Engineering and Nanoscience. RAMEN covers a wide range of research in all disciplines of science, engineering and medicine. RAMEN aims to publish the outstanding and latest research articles and strives to publish quality articles. RAMEN ...read more
Related Journals
- Author Guidelines
- Graphical Abstracts
- Fabricating and Stating False Information
- Research Misconduct
- Post Publication Discussions and Corrections
- Publishing Ethics and Rectitude
- Increase Visibility of Your Article
- Archiving Policies
- Peer Review Workflow
- Order Your Article Before Print
- Promote Your Article
- Manuscript Transfer Facility
- Editorial Policies
- Allegations from Whistleblowers
Related Articles
-
Differentiation Between Osteoporotic and Neoplastic Vertebral Fractures: State of The Art and Future Perspectives
Current Medical Imaging DNA Methylation Markers in Lung Cancer
Current Genomics Environment and Neurodegenerative Diseases: An Update on miRNA Role
MicroRNA Editorial (Thematic Issue: Prevention Strategies Targeting Different Preclinical Stages of Alzheimer’s Disease)
Current Alzheimer Research Metformin and Energy Metabolism in Breast Cancer: From Insulin Physiology to Tumour-initiating Stem Cells
Current Molecular Medicine Role of Complement Systems in IVIG Mediated Attenuation of Cognitive Deterioration in Alzheimer's Disease
Current Alzheimer Research The Therapeutic Community for the Adolescent Substance Abuser
Adolescent Psychiatry The Role of N-Methyl-D-Aspartate Receptor - Mediated Neurotransmission in Attention Deficit (Hyperactivity) Disorder (ADHD/ADD)
Current Psychopharmacology Novel Anti-Inflammatory and Neuroprotective Agents for Parkinsons Disease
CNS & Neurological Disorders - Drug Targets Association of EGF rs4444903 and XPD rs13181 Polymorphisms with Cutaneous Melanoma in Caucasians
Medicinal Chemistry The Importance of NAD in Multiple Sclerosis
Current Pharmaceutical Design Can we Target the Chemokine Network for Cancer Therapeutics?
Current Cancer Drug Targets The Alzheimer's Disease-Related Glucose Metabolic Brain Pattern
Current Alzheimer Research Kinase Phosphorylation-based Mechanisms of PARP Inhibitor Resistance During Synthetic Lethal Oncotherapy
Current Signal Transduction Therapy Synthesis of pyridyl benzimidazoles encompassing 4-thiazolidinone derivatives as potential antimicrobial agents
Letters in Drug Design & Discovery Review of PI3K/mTOR Inhibitors Entering Clinical Trials to Treat Triple Negative Breast Cancers
Recent Patents on Anti-Cancer Drug Discovery Alzheimer’s Disease and Molecular Chaperones: Current Knowledge and the Future of Chaperonotherapy
Current Pharmaceutical Design Exome-wide pharmacogenomic analysis of response to thiopurines in inflammatory bowel disease patients
Current Pharmacogenomics and Personalized Medicine Tumor Protein p63/microRNA Network in Epithelial Cancer Cells
Current Genomics Antisense Treatment in Human Prostate Cancer and Melanoma
Current Cancer Drug Targets