scholarly journals Preparation of Reed Straw-Based Panels Bonded by Soy-Based Adhesives: Optimization via Response Surface Methodology

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Zhang Yingjie ◽  
Yong Wang ◽  
Wanli Lou ◽  
Dongbin Fan
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Hot Pressing ◽  
Polynomial Regression ◽  
Pressing Temperature ◽  
Determination Coefficient ◽  
Average Value ◽  
Reed Straw ◽  
Preparation Conditions ◽  
Pressing Time

The optimization of manufacturing conditions for reed straw-based particleboard by soy-based adhesive was performed through response surface methodology. The interactions of various conditions, including adhesive amount, hot-pressing temperature, and hot-pressing time on wet internal bonding strength were investigated. A 3-level-3-factor Box–Behnken design was used to test the optimal preparation conditions of reed straw particleboard. The polynomial regression model for manufacturing conditions had a very significant level ( p < 0.01 ). In addition, the determination coefficient (R2) and the adjust determination coefficient ( R 2 ) of this model were found to be 0.969 and 0.9292, respectively. The conditions optimized by the model were 25% of adhesive amount, 138°C of hot-pressing temperature, and 27 min of hot-pressing time. Under the optimal conditions, validation tests were performed, and the average value of parallel experiments was 0.17 ± 0.02 MPa. Moreover, the thickness swelling of water absorption after soaking and mechanical properties (MOE and MOR) of samples prepared under optimized conditions were further measured, which all met the requirement of Type P6 particleboard. It could provide an efficient method for massive production of reed straw particleboard.

Study on the Strength Properties of PPTA Paper with Response Surface Methodology

2013 ◽  
Vol 756-759 ◽  
pp. 54-59
Author(s):  
Ai Min Tang ◽  
Shan Zhao ◽  
Chao Feng Jia
Keyword(s):  
Tensile Strength ◽  
Response Surface Methodology ◽  
Response Surface ◽  
Hot Pressing ◽  
Strength Properties ◽  
Pressing Pressure ◽  
Pressing Temperature ◽  
Wet Strength ◽  
Quadratic Formula ◽  
And Control

Response Surface Methodology (RSM) was used to study the relationship between the strength properties of poly ( p-phenylene terephthalamide)-PPTA paper and the preparation parameters, such as hot pressing temperature, hot pressing pressure, proportion of PPTA short-cut fiber and beating degree of PPTA-pulp. The results showed that: hot pressing temperature, hot pressing pressure have highly significant influences on the tensile strength and wet strength. The proportion of PPTA short-cut fiber has significant effects on the tensile strength and wet strength. The beating degree of PPTA-pulp also affected the tensile strength significantly. At the same time, the tensile strength was significantly influenced by the interaction between hot pressing temperature and the proportion of PPTA short-cut fiber as well as the interaction between hot pressing temperature and the beating degree of PPTA-pulp. The interaction between hot pressing temperature and hot pressing pressure has significant influences on wet strength, whereas the other factor interactions were not significant. The quadratic formula was established by optimizing the results of multiple regressions. And the model was highly consistent with the experiment. This model could be used to analyze and predict the main strength properties of PPTA paper and also might be used to optimize the production process of PPTA paper and control its quality.

Optimization Strategies for Improved Performance of Nano-Hybrid Wood/Polymer Composites Through Response Surface Methodology

2021 ◽  
Vol 15 (5) ◽  
pp. 648-655
Author(s):  
Yong Wang ◽  
Xia He ◽  
Xi Zhang ◽  
Dong Wang ◽  
Xianjun Li
Keyword(s):  
Response Surface Methodology ◽  
Polymer Composites ◽  
Response Surface ◽  
Modulus Of Rupture ◽  
Sem Images ◽  
Determination Coefficient ◽  
Preparation Conditions ◽  
Wood Polymer ◽  
Impregnation Time ◽  
Wood Polymer Composites

Response surface methodology (RSM) was used to optimize the preparation conditions of nano-hybrid wood/polymer composites with montmorillonite (MMT) and furfuryl alcohol (FA). The effects of MMT amount, impregnation pressure and impregnation time on weigh percent gain (WPG) of treated samples were evaluated with Box-Behnken design (BBD) of a 3-level-3-factor from RSM. The predictive model for the response was extremely significant (p < 0.01). The determination coefficient (√R2) and the adjusted determination coefficient (VR2) of this model were 0.9651 and 0.9203, respectively. The optimal preparation conditions obtained by RSM design with the assistance of Design Expert were determined as follows: 4 wt% MMT amount, 0.8 MPa impregnation pressure, and 80 min impregnation time. It could be concluded from the SEM images that MMT and FA coated the cell walls and filled cell lumens. Moreover, the thermal stability was also investigated. The effects of preparation conditions were further validated by analyzing the water uptake ratio (WU), modulus of elasticity (MOE) and modulus of rupture (MOR) of the pristine samples and the treated samples prepared under optimized conditions.

scholarly journals Photocatalytic Degradation of AO7 Aqueous Solution Using Ag/CeO2 Catalyst: Modeling of Process Parameters Using Response Surface Methodology

2021 ◽  
Vol 2129 (1) ◽  
pp. 012037
Author(s):  
Zal Helmi Abdul Hamid ◽  
A K Nur Fadzeelah ◽  
Wan Zuraida Wan Kamis ◽  
Siti Sabrina Sukri ◽  
Siti Khatijah Jamaluddin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Response Surface Methodology ◽  
Photocatalytic Degradation ◽  
Response Surface ◽  
Process Parameters ◽  
Polynomial Regression ◽  
Uv Light ◽  
Acid Orange 7 ◽  
Determination Coefficient ◽  
Surface Plot

Abstract In the present study, photocatalytic degradation of Acid Orange 7 (AO7) aqueous solution using Ag/CeO2 catalyst with the presence of UV light was evaluated. The effect of process parameters such as pH, initial dye concentration and Ag/CeO2 dosage were investigated using response surface methodology (RSM) based on three levels of Box-Behnken Design. The effect of process parameters and their binary interactions were analyzed using the polynomial regression model. The experimental data and ANOVA analysis showed that the determination coefficient (R2) and adjusted determination coefficient (R2 adj) were 0.9580 and 0.9161, respectively, demonstrated that the model was significant. The response surface plot was successfully established the interaction effect of process parameters on the photocatalytic degradation of AO7 aqueous solution.

Preparation of Activated Carbon from Formic Acid Hydrolysis Residue by Chemical Activation of ZnCl2

2013 ◽  
Vol 860-863 ◽  
pp. 527-533
Author(s):  
Zhen Wu ◽  
Yong Sun ◽  
Lei Hu ◽  
Ning Xu ◽  
Ben Lin Dai
Keyword(s):  
Response Surface Methodology ◽  
Activated Carbon ◽  
Formic Acid ◽  
Acid Hydrolysis ◽  
Wheat Straw ◽  
Response Surface ◽  
Reaction Temperature ◽  
Preparation Conditions ◽  
Formic Acid Hydrolysis ◽  
Hydrolysis Residue

Utilization of wheat straw for bio-based chemicals production is a research focus. In this work, experiments were conducted to study the preparation conditions of activated carbon from formic acid hydrolysis residue of wheat straw applying response surface methodology. The effects of activation reaction temperature, retention time and activator quantity on the decolorizing capacity of activated carbon were dealt with in this paper. Optimal preparation conditions were abtained by response surface methodology as followed: the content of ZnCl2 solution was 14.2%, reaction temperature was 798°C and retained time was 30 mins with a decolorizing capacity of 15.8 mL methylene blue. Results indicated that the technology was available.

The Technology on Producing the First Class Plywood Using Fast Growing Eucalyptus Timber

2012 ◽  
Vol 193-194 ◽  
pp. 496-499 ◽  
Author(s):  
Kai Fu Li ◽  
Kai Meng Xu
Keyword(s):  
Production Technology ◽  
Hot Pressing ◽  
Bonding Strength ◽  
Key Factors ◽  
Pressing Temperature ◽  
Fast Growing ◽  
Pressing Time

There were three key factors including glue quantity of veneer, hot-pressing time, hot-pressing temperature to be researched on the effect of plywood performance, which gave a effective conclusion about technology parameter. The results indicated that the three factors obviously were related to the bonding strength and ranked as hot-pressing time > glue quantity of veneer > hot-pressing temperature in sequence. The best groups for production technology were that glue quantity of veneer was 320 g/m2 with hot-pressing time and temperature of 1.2 mm/min and 135 °C respectively.

scholarly journals Kinetic Modeling and Optimization of Immobilized Candida antarctica Lipase B Catalysed Synthesis of Butyl-4-Methyl-3-Oxopentanoate using Response Surface Methodology

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Ganapati D. Yadav ◽  
Somnath Dattatray Shinde
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Polynomial Regression ◽  
Enzymatic Reaction ◽  
Candida Antarctica ◽  
Candida Antarctica Lipase B ◽  
Suitable Model ◽  
Candida Antarctica Lipase ◽  
Lipase B ◽  
Immobilized Candida Antarctica Lipase

Abstract Response surface methodology (RSM) was used to model and optimize the immobilized Candida antarctica lipase B catalysed synthesis of butyl-4-methyl-3-oxopentanoate. To determine optimum conditions of the transesterification, a four-factor and five-level central composite rotatable design (CCRD) was used. The factors studied were enzyme load (A), reaction temperature (B), methyl-4-methyl-3-oxopentanoate concentration (C) and n-butanol concentration (D). A quadratic polynomial regression model was used to analyze the experimental data at a 95% confidence level (p < 0.05). The results indicated that the RSM approach gave reasonable results for the optimization of the reaction parameters in the range of tested parameters. The optimal conditions for the enzymatic reaction were obtained at 0.01 mol of methyl-4-methyl-3-oxopentanoate and 0.03 mol of n-butanol using 104 mg of Novozym 435 at 55 °C and 300 rpm for 6 h. Under these conditions, the transesterification percentage was 87 %. Further, kinetic modelling of the enzymatic synthesis was illustrated. Initial rate data and progress curve data were used to arrive at a suitable model. The kinetics was found to obey the ternary complex ordered bi-bi model with inhibition by the substrate methyl-4-methyl-3-oxopentanoate. The values of kinetic parameters obtained from nonlinear regression analysis were found to be Vmax of 0.04 mol/L.min; Km(A) 0.11 mol/L; Km(B) 2 mol/L and Ki(A) 2.2 mol/L.

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