Acoustic Study Based on Sustainable Green Polymer Treated with H&lt;sub&gt;2&lt;/sub&gt;O

International Journal of Polymer Science

Hassan

2015

Self Cite

Biopolymer made from renewable material is one of the most important groups of polymer because of its versatility in application. In this study, biopolymers based on waste vegetable oil were synthesized and cross-link with commercial polymethane polyphenyl isocyanate (known as BF). The BF was compressed by using hot compression moulding technique at 90°C based on the evaporation of volatile matter, known as compress biopolymer (CB). Treatment with titanium dioxide (TiO2) was found to affect the physical property of compressed biopolymer composite (CBC). The characterization of thermal degradation, activation energy, morphology structure, density, vibration, and damping of CB were determined after UV irradiation exposure. This is to evaluate the photo- and thermal stability of the treated CB or CBC. The vibration and damping characteristic of CBC samples is significantly increased with the increasing of UV irradiation time, lowest thickness, and percentages of TiO2loading at the frequency range of 15–25 Hz due to the potential of the sample to dissipate energy during the oscillation harmonic system. The damping property of CBC was improved markedly upon prolonged exposure to UV irradiation.

Section: Methodsmentioning

confidence: 99%

Thermal Degradation and Damping Characteristic of UV Irradiated Biopolymer

International Journal of Polymer Science

Hassan

2015

Self Cite

“…Raw Materials. The raw materials for biopolymer laminated epoxy foam: bio-monomer based on waste cooking oil monomer [7][8][9][10][11][12][13][14], flexible isocyanate, Polyol flexible (Epoxy).…”

Section: Methodsmentioning

confidence: 99%

“…Bio foam with controlled pore size and structure can be produced from biodegradable polymers from renewable resources such as vegetable oils (VOs) obtained from agricultural products of soybean, palm oil, rapeseed, sunflower and coconut. In this research, bio foam and commercial foam is laminate with difference thicknesses is used to examine the sound absorption according to previous studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Sound Absorption of Laminated Biopolymer Foam and Epoxy Foam

Adnan

2013

KEM

Self Cite

Biopolymer foam was prepared based on vegetable oil and Polyol Flexible (Epoxy) with commercial Polymethane Polyphenyl Isocyanate (Modified Polymeric-MDI) as laminated foam. The acoustic property of biopolymer foam was examined by impedance tube test according to ASTM E-1050 of sound absorption coefficient (α). From the result obtain, sample D and sample C are the best result of sound absorption coefficient (α) for biopolymer foam and epoxy foam with the value are 0.867 and 0.817 respectively. By using the sound behavior theory, when the thickness is increase the sound absorption is also increase as same as in this study. The noise reduction coefficient (NRC) of sample D is 38.26% while for sample C is 37.42%.

“…VeSawit Palm oil was used as the original palm oil to produce the Biopolymer (BP). The conversion of the monomer starts with the catalyst preparation to generate the epoxies from the unsaturated fatty compound, and the second reaction is the opening of the acid catalyst ring of the epoxies to form polyols or bio-monomer (BM) [10][11][12][13][14][15][16][17][18][19].…”

Section: Bio-monomer (Bm)mentioning

confidence: 99%

Photodegradation Mechanism of Biopolymer Blended with High Density Polyethylene (HDPE)

Sulong

Latif

et al. 2023

ARAM

Synthetic polymer such as polyethylene is used widely in industry, agricultures and daily life owing to its relatively low price and good mechanical and processing properties. These synthetic polymers are, however, often not environmentally friendly because they typically do not undergo the process of biodegradation and, of course, are dependent on a limited petroleum resource. Therefore, concerns on environmental problems caused using of non-degradable petrochemical polymers have caused an increasing interest in degradable polymers especially biopolymers from crop plants. Biopolymers have much potential and several advantages, but they possess some drawbacks as well. Despite increasing production capacity, they are still quite expensive compared to commodity polymers and their properties are also often inferior, or at least do not correspond to the expectation of converters or users. This concept has led to the development blending of biopolymer and High-Density Polyethylene (HDPE). In this study, 5, 10, 15, 20, 25 and 30% of Biopolymer (BP) was blended with HDPE known as BBP5, BBP10, BBP15, BBP20, BBP25 and BBP30 were prepared by melt-mixing process by using Brabender Plastograph® EC machine. BBP5, BBP10, BBP15, BBP20, BBP25 and BBP30 then were exposed in UV weatherometer by using UV Lamp Test Chamber Model HD-703 at different UV exposure, which is 250h, 500h, 750h,1000h, 2000h, and 3000h. Physical properties and photodegradation mechanism development of BBP5, BBP10, BBP15, BBP20, BBP25 and BBP30 were examined by means of Fourier Transform Infrared (FTIR) at different UV exposure. The photodegradation mechanism of BBP5, BBP10, BBP15, BBP20, BBP25 and BBP30 shows relationship with the Norrish type I and Norrish type II reaction as indicated the possibilities of blended polymer degradation process was occurred.