scholarly journals SYNTHESIS OF CHITOSAN-FILM COMPOSITE TiO2 USING SORBITOL AS PLASTICIZER

2017 ◽  
Vol 13 (1) ◽  
pp. 75
Author(s):  
Imelda Fajriati ◽  
Endaruji Sedyadi ◽  
Sudarlin Sudarlin
Keyword(s):  
Tensile Strength ◽  
Composite Film ◽  
Plastic Material ◽  
Anatase Phase ◽  
Homogeneous Solution ◽  
Chitosan Film ◽  
Film Composite ◽  
Chitosan Matrix ◽  
Uv Rays

<p>The synthesis of chitosan–TiO<sub>2</sub> film composite using sorbitol as plasticizer has been conducted. This research aims to develop environmental friendly plastic material which is safe for health due to the use of biodegradable chitosan - TiO<sub>2 </sub>that can block UV rays and therefore, maintain the quality of product from damage caused by UV rays. The anatase phase TiO<sub>2</sub> nanocrystal was synthesized in chitosan matrix at room temperature and aging process. The solution was then added and blended in sorbitol for 24 hours to obtain homogeneous solution. The composite film was formed by coating method on a plate substrate, followed by drying. The characterization of film composite by XRD, TEM and FTIR showed the forming of anatase phase TiO<sub>2</sub> nanocrystal that dispersed in chitosan matrix and formed the hydrogen bond. Meanwhile, from the physical properties characterization it was observed that the use of sorbitol as plasticizer had improved the plasticity tensile strength and elongation of the composite film. However, the excess sorbitol reduced the elasticity, tensile strength and elongation of the plastic. The best quality of plasticity obtained from film composite added by 3 % of sorbitol.</p>

scholarly journals SYNTHESIS OF CHITOSAN-FILM COMPOSITE TiO2 USING SORBITOL AS PLASTICIZER

2017 ◽  
Vol 13 (1) ◽  
pp. 75
Author(s):  
Imelda Fajriati ◽  
Endaruji Sedyadi ◽  
Sudarlin Sudarlin
Keyword(s):  
Tensile Strength ◽  
Composite Film ◽  
Plastic Material ◽  
Anatase Phase ◽  
Homogeneous Solution ◽  
Chitosan Film ◽  
Film Composite ◽  
Chitosan Matrix ◽  
Uv Rays

<p>The synthesis of chitosan–TiO<sub>2</sub> film composite using sorbitol as plasticizer has been conducted. This research aims to develop environmental friendly plastic material which is safe for health due to the use of biodegradable chitosan - TiO<sub>2 </sub>that can block UV rays and therefore, maintain the quality of product from damage caused by UV rays. The anatase phase TiO<sub>2</sub> nanocrystal was synthesized in chitosan matrix at room temperature and aging process. The solution was then added and blended in sorbitol for 24 hours to obtain homogeneous solution. The composite film was formed by coating method on a plate substrate, followed by drying. The characterization of film composite by XRD, TEM and FTIR showed the forming of anatase phase TiO<sub>2</sub> nanocrystal that dispersed in chitosan matrix and formed the hydrogen bond. Meanwhile, from the physical properties characterization it was observed that the use of sorbitol as plasticizer had improved the plasticity tensile strength and elongation of the composite film. However, the excess sorbitol reduced the elasticity, tensile strength and elongation of the plastic. The best quality of plasticity obtained from film composite added by 3 % of sorbitol.</p>

scholarly journals Development and Characterization of a Biodegradable Colored Film Based on Starch and Chitosan by Using Acacia Catechu

2016 ◽  
Vol 8 (2) ◽  
pp. 123-130
Author(s):  
FB Quader ◽  
RA Khan ◽  
MA Islam ◽  
S Saha ◽  
KN Sharmin
Keyword(s):  
Tensile Strength ◽  
Composite Film ◽  
Thermo Gravimetric Analysis ◽  
Chitosan Film ◽  
Green Technology ◽  
Gravimetric Analysis ◽  
Good Thermal Stability ◽  
Biodegradable Composite ◽  
Acacia Catechu

Green technology like biodegradable films using natural polymer is an obvious need of today. Attempt of this experiment was aimed at development and characterization of a biodegradable colored film based on starch and chitosan by using Acacia catechu. Chitosan reinforced starch based biodegradable composite film was prepared by casting. The chitosan content in the films was varied from 20-80 % (w/w). Tensile strength (TS) was improved significantly with the addition of chitosan but the elongation at break (EB %) of the composite decreased. With the addition of the Acacia catechu, tensile strength of the composites improved more. The acacia content of the film was varied from 0.05-0.2(w/w). The good thermal stability of this prepared film was confirmed by thermo-gravimetric analysis. Structural characterization was done by Fourier transform infrared radiation spectroscopy. Surface morphology of the composite film was examined by scanning electron microscope (SEM) which suggested sufficient homogenization of starch, chitosan and Acacia catechu. Water uptake was found lower for final composites in the comparison to starch/chitosan and chitosan film. The satisfactory rate of degradation in the soil is expected that the final composite film within less than 6 months. The developed films intended to use as the alternative of synthetic non biodegradable colored packaging films.J. Environ. Sci. & Natural Resources, 8(2): 123-130 2015

Graphene oxide and zinc oxide decorated chitosan nanocomposite biofilms for packaging applications

2020 ◽  
Vol 40 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Pınar Terzioglu ◽  
Yasin Altin ◽  
Ayse Kalemtas ◽  
Ayse Celik Bedeloglu
Keyword(s):  
Tensile Strength ◽  
Zinc Oxide ◽  
Graphene Oxide ◽  
Composite Film ◽  
Young’S Modulus ◽  
Mechanical Performance ◽  
Young's Modulus ◽  
Chitosan Film ◽  
Oxide Composite ◽  
Wide Range

AbstractRecently, due to sustainable development and environmental protection policies, there is increasing interest in the development of new biodegradable polymer-based multifunctional composites. Chitosan is one of the most remarkable and preferred biopolymers, which is environmentally friendly as well as renewable, biocompatible, and inexpensive. Though it has a wide range of potential applications, the major limitation of chitosan – the problem of poor mechanical performance – needs to be solved. In this work, graphene oxide was first produced and then used to manufacture a chitosan/graphene oxide/zinc oxide composite film through a casting method. The properties of the chitosan film and the chitosan/graphene oxide/zinc oxide composite film were investigated using Fourier transform infrared spectroscopy, mechanical, thermal gravimetric, and ultraviolet (UV)-visible spectroscopy analyses. The results showed that the incorporation of graphene oxide and zinc oxide into the chitosan matrix resulted in enhanced mechanical properties and thermal stability of chitosan biocomposite films. The graphene oxide- and zinc oxide-reinforced chitosan film showed 2527 MPa and 55.72 MPa of Young’s modulus and tensile strength, respectively, while neat chitosan showed only 1549 MPa and 37.91 MPa of Young’s modulus and tensile strength, respectively. Conversely, the addition of graphene oxide decreased the transmittance, notably in the UV region.

scholarly journals A Theoretical and Experimental Research on the Influence of FDM Parameters on Tensile Strength and Hardness of Parts Made of Polylactic Acid

2021 ◽  
Vol 11 (4) ◽  
pp. 7458-7463
Author(s):  
D. G. Zisopol ◽  
I. Nae ◽  
A. I. Portoaca ◽  
I. Ramadan
Keyword(s):  
Tensile Strength ◽  
Rapid Prototyping ◽  
Polylactic Acid ◽  
Experimental Research ◽  
Fused Deposition Modeling ◽  
Plastic Material ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Plastic Parts

Fused Deposition Modeling (FDM) is a rapid prototyping method, widely used in the manufacture of plastic parts with complex geometric shapes. The quality of the parts manufactured by this process depends on the plastic material used and the FDM parameters. In this context, this paper will present the results of a theoretical and experimental research on how FDM parameters influence the tensile strength and hardness of samples made of PLA (Polylactic Acid).

scholarly journals MENINGKATKAN MUTU PRODUK PLASTIK DENGAN METODE TAGUCHI

2012 ◽  
Vol 13 (1) ◽  
pp. 93 ◽  
Author(s):  
Moh. Hartono
Keyword(s):  
Tensile Strength ◽  
Plastic Material ◽  
Design Method ◽  
Signal To Noise Ratio ◽  
Waste Utilization ◽  
Plastic Waste ◽  
Material Composition ◽  
Plastic Type ◽  
Experimental Design Method

Plastic waste is one type of waste that can not be broken down into the organic waste. Utilization of waste plastics to berecycled into plastic with better quality are rarely implemented. This study aims to utilize plastic waste in order to improve the quality of plastic products by Taguchi experimental design method that combines the pure plastic material composition of ore and recycled plastic (type PP/Polypropilena) with a certain pressure and temperature to produce a tensile strength of the plastic the better. From the experimental results, obtained by a combination of material composition of 30% recycled plastic, the pressure of 6.5 atm and a temperature of 180 °C. The composition obtained by the average tensile strength of 991.667 Newton, and Signal to Noise ratio (Larger is better) by 59, 9255. Statistically, tur ulang he combination was significantly affected by alpha at 0:05 Taguchi method through experiments with a matrix orthogonal array L8 (23).

scholarly journals Effect of Curcumin Addition on the Properties of Biodegradable Pectin/Chitosan Films

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2152
Author(s):  
Qingtong Xie ◽  
Xudong Zheng ◽  
Liuting Li ◽  
Liqun Ma ◽  
Qihui Zhao ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Food Packaging ◽  
Light Transmission ◽  
Antioxidant Activities ◽  
Three Dimensional ◽  
Deep Eutectic Solvent ◽  
Chitosan Film ◽  
Dependent Manner ◽  
Chitosan Matrix ◽  
Dimensional Network

A pectin/chitosan matrix-loaded curcumin film (PCCF) with a deep eutectic solvent (DES) as the solvent and plasticizer was prepared in this study. Different quantities of curcumin (identified as PCCF-0, PCCF-1, PCCF-2. PCCF-3) were loaded on the pectin/chitosan film in order to evaluate their effects on the film properties. Results showed that curcumin could interact with the pectin/chitosan matrix and form a complex three-dimensional network structure. PCCF could promote the thickness, tensile strength, thermal properties, antioxidant and antiseptic capacities, but deteriorate the light transmission and elongation at the same time. The addition of curcumin would change the color of the film, without significantly affecting the moisture content. The tensile strength of PCCF-3 reached the maximum value of 3.75 MPa, while the elongation decreased to 10%. Meanwhile, the water-resistance properties of PCCF-3 were significantly promoted by 8.6% compared with that of PCCF-0. Furthermore, PCCF showed remarkable sustained antioxidant activities in a dose-dependent manner. PCCF-3 could inhibit DPPH and ABTS free radicals by 58.66% and 29.07%, respectively. It also showed antiseptic capacity on fresh pork during storage. Therefore, curcumin addition could improve the barrier, mechanical, antioxidant and antiseptic properties of the polysaccharide-based film and PCCF has the potential to be used as a new kind of food packaging material in the food industry.

EXPERIENCE OF RECONSTRUCTION OF THE BREAST WITH THE USE OF THORACODORSAL FLAP

2018 ◽  
Vol 64 (2) ◽  
pp. 206-210
Author(s):  
Petr Krivorotko ◽  
Vladimir Semiglazov ◽  
Aleksey Belyaev ◽  
Kirill Nikolaev ◽  
Tengiz Tabagua ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Plastic Material ◽  
Breast Cancer Patients ◽  
Anterior Axillary Line ◽  
National Medical ◽  
Results Of Treatment ◽  
Implant Placement ◽  
Quality Of Medical Care ◽  
Low Incidence

Purpose: To analyze the results of treatment and the quality of medical care for breast cancer patients with breast reconstruction using thoracodorsal flap (TDF). Material and methods: The study was conducted on the basis of the N.N. Petrov National Medical Research Center of Oncology at the Department of Breast Tumors for the period 2016-2017. When using the reconstruction of the breast with the help of TDF the feature was the complete intersection of the muscle in the anterior-axillary line before closing the defect of the breast tissue but with the preservation of the thoracodorsal vascular sheaf. Surgical treatment was provided to 67 patients with breast cancer including after neoadjuvant therapy. Results: One-time reconstruction was performed in 16 (23.8%) patients under the organ-preserving surgery, mastectomy in two (2.9%) patients and mastectomy with implant placement in 27 (40.2%) patients. Delayed reconstruction of the breast: TDF in combination with the implant - 20 (29.8%), the use of TDF without an implant - 2 (2.9%) patients. Complications were observed in 6 (8.9%) patients. Conclusion: Reconstruction of the breast with TDF is the method of choice and priority for patients who underwent radiation therapy with a lack of integumentary tissues to cover the implant. TDF is a «good» plastic material and could be used in patients with severe defect of breast shape after organ-preserving surgery and mastectomy. TDF is characterized by a low incidence of complications. The use of TDF does not worsen the rehabilitation of patients and does not shift the timing of adjuvant treatment.

scholarly journals Optimisation of Shrinkage and Strength on Thick Plate Part Using Recycled LDPE Materials

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1795
Author(s):  
Norshahira Roslan ◽  
Shayfull Zamree Abd Rahim ◽  
Abdellah El-hadj Abdellah ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Katarzyna Błoch ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Thick Plate ◽  
Processing Parameters ◽  
Processing Parameter ◽  
Plastic Injection Moulding ◽  
Optimal Setting ◽  
Quality Of Products ◽  
Validation Tests ◽  
Plastic Injection

Achieving good quality of products from plastic injection moulding processes is very challenging, since the process comprises many affecting parameters. Common defects such as warpage are hard to avoid, and the defective parts will eventually go to waste, leading to unnecessary costs to the manufacturer. The use of recycled material from postindustrial waste has been studied by a few researchers. However, the application of an optimisation method by which to optimise processing parameters to mould parts using recycled materials remains lacking. In this study, Response Surface Methodology (RSM) and Particle Swarm Optimisation (PSO) methods were conducted on thick plate parts moulded using virgin and recycled low-density polyethylene (LDPE) materials (100:0, 70:30, 60:40 and 50:50; virgin to recycle material ratios) to find the optimal input parameters for each of the material ratios. Shrinkage in the x and y directions increased in correlation with the recycled ratio, compared to virgin material. Meanwhile, the tensile strength of the thick plate part continued to decrease when the recycled ratio increased. R30 (70:30) had the optimum shrinkage in the x direction with respect to R0 (100:0) material where the shrinkage increased by 24.49% (RSM) and 33.20% (PSO). On the other hand, the shrinkage in the y direction for R30 material increased by 4.48% (RSM) and decreased by 2.67% (PSO), while the tensile strength of R30 (70:30) material decreased by 0.51% (RSM) and 2.68% (PSO) as compared to R0 (100:0) material. Validation tests indicated that the optimal setting of processing parameter suggested by PSO and RSM for R0 (100:0), R30 (70:30), R40 (60:40) and R50 (50:50) was less than 10%.

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