scholarly journals Development of Particleboard from Green Coconut Waste

2021 ◽  
Vol 2120 (1) ◽  
pp. 012034
Author(s):  
J X Lim ◽  
T K Ong ◽  
C K Ng ◽  
I W Chua ◽  
Y B Lee ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Water Resistance ◽  
Urea Formaldehyde ◽  
Natural Rubber Latex ◽  
Modulus Of Rupture ◽  
Epoxidized Natural Rubber ◽  
Thickness Swelling ◽  
Rubber Latex ◽  
Three Samples ◽  
Coconut Fibre

Abstract In this study, green coconut waste was successfully transformed into coconut fibre-based particleboards. In addition to urea-formaldehyde (UF), two types of green binder: BST00 (low ammoniated latex and epoxidized natural rubber latex-based) and BST20 (epoxidized natural rubber latex-based) were used in particleboard fabrication. The particleboards were fabricated using coconut pith and fibre with 15% binder loading through two pre-compression steps followed by a final hot compression at 140 °C for 15 mins at ∼2.1 MPa. Board properties such as density, thickness swelling (TS), water absorption (WA), and internal bond (IB) strength were determined in accordance with JIS A 5908 standard, except for modulus of rupture (MOR) (ASTM D1037). BST00-bonded particleboards exhibit the poorest properties among the three samples, making BST00 the least effective binder. BST20-bonded particleboards show the best overall properties with the highest density of ∼1 g/cm3, IB value of 0.416 MPa, MOR of 11.61 MPa, best water resistance with TS of 14% and WA of 24%. The UF-bonded particleboards have the highest MOR of 12.05 MPa. Overall, the UF- and BST20-bonded coir particleboards met the minimum JIS A 5908 requirement except density (0.4-0.9 g/cm3) and TS (<12%). The green binder BST20 has shown great potential to replace UF.

Mechanical Properties of Natural Rubber and Chloroprene Rubber Latex Blends

2011 ◽  
Vol 239-242 ◽  
pp. 1601-1604 ◽  
Author(s):  
Xiao Xue Liao ◽  
Hai Sheng Tan ◽  
Ming Chao Luo ◽  
Bing Tang ◽  
Shuang Quan Liao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Physical And Mechanical Properties ◽  
Epoxidized Natural Rubber ◽  
Latex Film ◽  
Rubber Latex ◽  
Oil Resistance ◽  
Chloroprene Rubber

The effects of the ratios of natural rubber latex (NRL)and chloroprene rubber latex(CRL) and the type of compatibilizer on physical and mechanical properties of latex film were researched.The oil resistance of vulcanized latex film was tested. The compatibility of the latex blends was also analyzed by TG/DTG method.The results showed that properties of latex film were best when ratio of NRL/CRL was 75/25. As the CRL content increased, oil resistance of latex film was improved. Epoxidized natural rubber latex improved compatibility of NRL and CRL blends.

Assessing biodegradability of epoxidized natural rubber latex

2021 ◽  
Author(s):  
A. H. Aziana ◽  
M. S. Shabinah Filza ◽  
R. Roslim ◽  
M. R. Fatimah Rubaizah
Keyword(s):  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Epoxidized Natural Rubber ◽  
Rubber Latex

Exploiting epoxidized natural rubber latex (ENRL) as a starting raw material for latex-based products

2017 ◽  
Author(s):  
M. Siti Nor Qamarina ◽  
M. R. Fatimah Rubaizah ◽  
A. Nurul Suhaira ◽  
M. Y. Norhanifah
Keyword(s):  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Raw Material ◽  
Epoxidized Natural Rubber ◽  
Rubber Latex

Evaluation of Epoxidized Natural Rubber Latex Based Pressure Sensitive Adhesives Containing Hydrocarbon and Rosin Ester Tackifier Dispersions on Adhesive Properties

2013 ◽  
Vol 845 ◽  
pp. 189-193
Author(s):  
Abu Bakar Rohani ◽  
S. Manroshan ◽  
V. Devaraj
Keyword(s):  
Natural Rubber ◽  
Membrane Separation ◽  
Natural Rubber Latex ◽  
Epoxidized Natural Rubber ◽  
Rubber Latex ◽  
Adhesive Properties ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Peel Adhesion ◽  
Rosin Ester

Epoxidized natural rubber latex with 50 mole % epoxidization referred to as ENR50 L was produced by in situ generated peracids. ENR50 L was subsequently concentrated to ENR50 L concentrate (ENR50 LC)viaultrafiltration membrane separation process. Both, ENR50 Latices (ENR50 L and ENR50 LC) were evaluated for the formulation of latex-based pressure sensitive adhesives (PSAs). In this work, evaluation of hydrocarbon and rosin ester tackifier dispersions in ENR50 Latices - based PSAs were performed through viscosity and peel adhesion test. The viscosity of latex-based PSAs containing hydrocarbon tackifier increased with increasing level of ENR50 Latices. However, the trend for latex-based PSAs containing rosin ester tackifier was inversely proportional to the level of ENR50 Latices. The peel adhesion of ENR50 Latices - based PSAs containing hydrocarbon tackifier was found greater than that of ENR50 Latices based PSAs containing rosin ester tackifier. Furthermore, the peel adhesion of ENR50 LC based PSAs was marginally higher than ENR50 L based PSAs.

Synthesis and Modification of Epoxidized Natural Rubber from Natural Rubber Latex

2008 ◽  
Vol 47-50 ◽  
pp. 734-737 ◽  
Author(s):  
Chaiwat Ruksakulpiwat ◽  
Sukanya Nuasaen ◽  
Choosak Poonsawat ◽  
Paveena Khansawai
Keyword(s):  
Optimum Condition ◽  
Natural Rubber ◽  
Thermal Resistance ◽  
Natural Rubber Latex ◽  
Hydrogenation Reaction ◽  
Epoxidized Natural Rubber ◽  
Optimum Conditions ◽  
Rubber Latex ◽  
Optimum Amount

The purpose of this research is to modify natural rubber (NR). The optimum conditions for synthesis of epoxidized natural rubber (ENR) was investigated. The synthesized ENR was modified by hydrogenation reaction. This modified ENR was called HENR. The optimum amount of CuSO4 ·5H2O used in this reaction was investigated. It was found that the optimum condition for synthesizing ENR is as followed. The type of surfactant is POE(12)tridecyl ether and the amount of this surfactant is 5 phr. The highest epoxide content which received from fresh NR latex and concentrated NR latex in selected condition are 25.53 and 22.51% respectively. The highest percentage of hydrogenation from this condition is 67.90%. It can be concluded that after hydrogenation reaction HENR shows higher thermal resistance than that of synthesized ENR.

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