Novel biodegradable composite wound dressings with controlled release of antibiotics: Microstructure, mechanical and physical properties

: Light can act as an effective and strong agent for the cross-linking of biomaterials and tissues and is recognized as a safe substitute for chemical cross-linkers to modify mechanical and physical properties and promote biocompatibility. This review focuses on the research about cross-linked biomaterials with different radiation sources such as Laser or Ultraviolet (UV) that can be applied as scaffolds, controlled release systems, and tissue adhesives for cornea healing and tissue regeneration.

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MECHANICAL AND PHYSICAL PROPERTIES OF THERMOPLASTIC CORN STARCH

Jurnal Teknologi ◽

10.11113/jurnalteknologi.v83.16576 ◽

2021 ◽

Vol 83 (5) ◽

pp. 119-127

Author(s):

Nazri Huzaimi Zakaria ◽

Ridhwan Jumaidin ◽

Mohd Adrinata Shaharuzaman ◽

Mohd Rody Mohamad Zin ◽

Fudhail Abdul Munir

Keyword(s):

Tensile Strength ◽

Moisture Content ◽

Physical Properties ◽

Water Absorption ◽

Corn Starch ◽

Absorption Test ◽

Physical Test ◽

Biodegradable Composite ◽

Mechanical And Physical Properties ◽

Water Absorption Test

The awareness to produce biodegradable composite has increased rapidly because of non-toxic and reachable. However, fully biodegradable composite production still low due to the matrix used in the composite is not biodegradable. Thus, this paper presents the study on mechanical and physical properties for the mixtures of corn starch (CS) with different weight percentages of glycerol as thermoplastics corn starch (TPCS) matrix. The selected glycerol contents were at 30, 35 and 40 wt%. The mixtures of CS and different weight percentages of glycerol were made using hot compression moulding at 165°C for 15 minutes to produce the TPCS samples. The mechanical and physical properties were done: the tensile test, hardness test, water absorption test, moisture content test and microstructure analysis under the Scanning Electron Microscopes (SEM). Incorporating 30 wt% loadings of glycerol has increased the tensile strength and hardness. The results show that the addition of higher than 30 wt% loadings of glycerol has decreased the tensile strength and hardness of the TPCS. The physical test results for 30 wt% loadings of glycerol for water absorption test and moisture content show the lowest value than other TPCS samples. However, the density value for all wt% loadings of glycerol does not offer much difference. It reveals that 30 wt% loadings of glycerol in the mixture of CS have shown a good interaction in the TPCS mechanical properties. Based on this finding, the TPCS has huge potential to be used as a matrix to develop a fully biodegradable composite.

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PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

Jurnal Riset Industri Hasil Hutan ◽

10.24111/jrihh.v4i1.1195 ◽

2012 ◽

Vol 4 (1) ◽

pp. 1

Author(s):

Djoko Purwanto

Keyword(s):

Mechanical Properties ◽

Compressive Strength ◽

Physical Properties ◽

Treatment Process ◽

Acacia Mangium ◽

Physical And Mechanical Properties ◽

Wood Fibers ◽

Test Parameters ◽

Mechanical And Physical Properties ◽

Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

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