Scratch Hardness Properties of Waste Palm Cooking Oil Based Polycaprolactone Urethane Coatings

2019 ◽  
Vol 947 ◽  
pp. 178-182
Author(s):  
Norazwani Muhammad Zain ◽  
Wan Amirul Ashraf ◽  
Suzana Ali Ernie
Keyword(s):  
Mechanical Properties ◽  
Ring Opening ◽  
Scratch Resistance ◽  
Ring Opening Polymerization ◽  
Isophorone Diisocyanate ◽  
Hardness Testing ◽  
Properties Of Coatings ◽  
Scratch Hardness ◽  
Cooking Oil ◽  
Weathering Resistance

Polyurethane has been widely used in various coating industries due to its good weathering resistance, promising appearance, excellent elasticity and good mechanical properties. The present work reports the development of polycaprolactone urethane coatings based on waste palm cooking oil (WPCO). WPCO was recycled to synthesis polycaprolactone (PCL) polyol using two-steps methods; transesterification and ring opening polymerization with various ratios of ε-CL to WPCO based polyesteramide. The WPCO based PCL polyols were reacted with isophorone diisocyanate (IPDI) to produce polycaprolactone urethane coatings. FTIR analyses were employed to confirm the formation of polyols and the scratch resistance properties of coatings were characterized by scratch hardness testing. The results revealed that the scratch resistance of polycaprolactone urethane coatings increased by increasing the ε-CL composition in the formulation.

scholarly journals Sialon and Alumina Modified UV-Curable Coatings with Improved Mechanical Properties and Hydrophobicity

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1424
Author(s):  
Mariola Robakowska ◽  
Łukasz Gierz ◽  
Hubert Gojzewski
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Inorganic Compounds ◽  
Surface Hydrophobicity ◽  
Scratch Resistance ◽  
Aluminum Oxynitride ◽  
Uv Curable ◽  
Scratch Hardness ◽  
Coating Surface ◽  
Inorganic Fillers

This article describes the modification of UV-curable coatings with silicon aluminum oxynitride (Sialon) and aluminum oxide (Alu C), which improve the hydrophobicity of the coating surface and the scratch hardness. The contact angle is greater due to surface roughness being enhanced with inorganic fillers. Improved scratch resistance results from the formation of a sliding layer triggered by the diffusion of Sialon or alumina on the coating surface. One can observed an increase in the surface hydrophobicity as well as in the scratch hardness (up to 100%) when small amounts (5 wt.%) of the inorganic compounds are added. Imaging microscopies, i.e., SEM, OM, and AFM (with nanoscopic Young’s modulus determination), revealed the good distribution of both types of fillers in the studied matrix.

Tailoring the degradation and mechanical properties of poly(ε-caprolactone) incorporating functional ε-caprolactone-based copolymers

2019 ◽  
Vol 10 (27) ◽  
pp. 3786-3796 ◽  
Author(s):  
Mi Xu ◽  
Cuili Guo ◽  
Haozhen Dou ◽  
Yi Zuo ◽  
Yawei Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Block Copolymers ◽  
Ring Opening ◽  
Oxidative Degradation ◽  
Ring Opening Polymerization ◽  
Functional Block ◽  
Functional Block Copolymers

Functional block copolymers (COPs) were synthesized through the ring-opening polymerization, and the effects of COPs on the hydrolytic & oxidative degradation and mechanical properties of PCL/COP composites were studied.

scholarly journals INVESTIGATION OF BIOPLASTIC PROPERTIES DEVELOPED FROM ACRYLATE EPOXIDIZED SOYBEAN OIL THROUGH RING OPENING POLYMERIZATION PROCESS

1970 ◽  
Vol 1 (1) ◽  
pp. 29-41 ◽  
Author(s):  
Hiew Ming Yu ◽  
Arun Gupta ◽  
Ritu Gupta ◽  
Saad Bala Husain
Keyword(s):  
Mechanical Properties ◽  
Soybean Oil ◽  
Ring Opening ◽  
Unsaturated Fatty Acids ◽  
Ring Opening Polymerization ◽  
Epoxidized Soybean Oil ◽  
Polymerization Process ◽  
Synthesis And Characterization ◽  
Glycerol Concentration

Soybean oil is one of the major vegetable oils containing more than 99% of triglycerides of saturated and unsaturated fatty acids and has become an interesting source to produce bioplastic. This study investigates the synthesis and characterization of bioplastic developed by the acrylate epoxidized soybean oil through ring opening polymerization process. The mechanical properties of the samples were characterized using Fourier Transform Infrared Spectroscopy, Thermogravimetric analysis and the physio-chemical properties of the bioplastics were studied. In this study, the bioplastic made up from soybean oil with the lowest glycerol concentration showed the best mechanical properties.

Influence of Different Initiators Against the Mechanical Properties of Poly(e-caprolactone) used for Biodegradable Bone Implants

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Adriana Lungu ◽  
Teodora Zecheru ◽  
Stanca Comsa ◽  
Horia Iovu
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Hydrolysis Rate ◽  
Reaction Conditions ◽  
Structures And Properties ◽  
Polymer Research ◽  
Industrial Use ◽  
Improved Characteristics

The ability of a strict control for the advanced macromolecular structures synthesis has been an important objective in our research. The development of polymers with defined structures and properties, aimed at biomedical applications, leads to complex and advanced architecture and diversity of the biodegradable polymers. Ring-opening polymerization is one of the most common methods for the synthesis of polymers with improved characteristics. Poly e-(caprolactone) (PCL) is prepared by ring-opening polymerization of the monomer e-caprolactone. The main factors which influence the ring-opening polymerization are the reaction conditions, such as the nature of the initiator, type and concentration of catalyst, reaction temperature and time. Stannous (II) 2-ethylhexanoate is used to catalyze the polymerization and alcohols are used as initiators. The initiators are also used to control the polymers molecular weight. Despite the long use of this catalyst in both industrial use and polymer research, several questions about the properties of the final product still remain. Our study describes the polymerization of e-caprolactone performed in the presence of catalyst (stannous (II) 2-ethylhexanoate) and initiator (1, 6 hexandiol or trimethylol propane) at moderate temperature (110�C). The polymerization of e-caprolactone was also performed in the presence of catalyst alone in order to evaluate the effect of the initiator against the polymers molecular weight. The obtained polymers were characterized by FTIR, GPC and TGA with respect to their mechanical properties. It is crucial to control the molecular weight of PCL for biomedical and pharmaceutical applications, because its molecular weight determines the hydrolysis rate. Several ratios among monomer, catalyst and initiator were studied, and we chose an optimum composition, in order to control the mechanical properties, degradation profiles respectively, and to avoid the cytotoxicity given by the reagents used.

scholarly journals Study on Ring-Opening Polymerization of 2,2-Dimethyltrimethylenecarbonate and Physicochemical and Mechanical Properties.

1998 ◽  
Vol 55 (6) ◽  
pp. 323-327
Author(s):  
Shinichi MIZUNO ◽  
Naoki NAKAJIMA ◽  
Sadami TSUTSUMI ◽  
Suong-Hyu HYON
Keyword(s):  
Mechanical Properties ◽  
Ring Opening ◽  
Ring Opening Polymerization

Preparation of a P(THF-co-PO)-b-PB-b-P(THF-co-PO) triblock copolymer via cationic ring-opening polymerization and its use as a thermoset polymer

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 66073-66081 ◽  
Author(s):  
Wanbin Zhang ◽  
Xiaodong Fan ◽  
Wei Tian ◽  
Heng Chen ◽  
Xiuzhong Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ring Opening ◽  
Triblock Copolymer ◽  
Dynamic Mechanical Properties ◽  
Ring Opening Polymerization ◽  
Dynamic Mechanical ◽  
Thermoset Polymer ◽  
Cationic Ring Opening Polymerization

Triblock copolymer P(THF-co-PO)-b-PB-b-P(THF-co-PO) with gradient copolyether segments was synthesized, and its elastomer exhibited excellent dynamic mechanical properties.

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