UMS TT Blade (Table Tennis Blade made from Local Timber Species) Ag Ahmad Bin Mohd Yunus
WOOD ANATOMICAL STRUCTURE OF Aquilaria malaccensis (GAHARU) ASSOCIATED TO GAHARU RESIN OCCURENCE
Shirley Bakansing
Cross laminated timber (CLT) are layers of solid-sawn or structural composite lumber glued together in alternating grain orientations
CLT offers great strength, dimensional stability, and rigidity, which is suitable for load-bearing applications.
The project is a joint research collaboration between UMS and Sapulut Forest Development Sdn. Bhd. on “Cross Laminated Timber Project:
Strength And Durability Studies On The Performance Of Low-density Tropical Plantation Timbers” (Paraserianthes falcataria and Neolamarckia cadamba)
UMS TT Blade, a research undertaken to foresee the potentials of local timber species to be utilized as raw material for table tennis blade production.
INTRODUCTION
Results from the mechanical testing showed that cross laminated timbers made from these low density tropical plantation timbers are comparable to strength class D30-D35 of BS5268- 2: 2002.
RESULTS & CONCLUSION PROCESSES
INTRODUCTION
GRANT
UMS Innovation Grant
ACKNOWLEDGEMENT
Universiti Malaysia Sabah
Sapulut Forest Development Sdn. Bhd.
Table tennis blade production from Sentang (Azadirachta excelsa)
CHARACTERIZATION OF NITROCELLULOSE FROM Acacia mangium
Melissa Sharmah Gilbert, Dayang Nur Sakinah Musa & Shirley Bakansing
INTRODUCTION
Nitrocellulose or cellulose nitrate is a highly flammable compound commonly manufactured as guncotton and low-order explosives
For this study, A. mangium was used to produce nitrocellulose by nitrating cellulose through exposure to nitric acid
The physical and chemical attributes of the nitrocellulose was determined based on two different sizes (75 and 150 μm)
METHODOLOGY
Substitution of hydroxyl group in cellulose into nitro group to produce nitrocellulose
Nitration
[Acid Mix + Pulp]
Extraction
Preparation of Acid Mix and Pulp [Nitric acid + Sulfuric acid]
Stabilization
1.7 2.66
0 0.5 1 1.5 2 2.5
3 Degree of Substitution
75 μm 150 μm
Degree of substitution
of nitrated A. mangium
RESULTS
9.85% 12.54%
0.00%
2.00%
4.00%
6.00%
8.00%
10.00%
12.00%
14.00% Nitrogen Content
75 μm 150 μm
GRANT
UMS SPLB Grant (SLB0152-2017)
PRODUCTION OF CELLULOSE ACETATE FROM Acacia mangium AS COATING MATERIAL Ismawati Palle, Roziela Hanim Alamjuri, & Rafidah Md. Salim
CROSS LAMINATED TIMBER PROJECT: STRENGTH AND DURABILITY STUDIES ON THE PERFORMANCE OF LOW-DENSITY TROPICAL PLANTATION TIMBERS (Paraserianthes falcataria and Neolamarckia cadamba)
Assoc. Prof. Dr. Liew Kang Chiang
INTRODUCTION EXPERIMENTAL RESULTS & CONCLUSION
Cellulose acetate was produced from A.
mangium as an intermediate product for the subsequent coating product
The physical and mechanical properties of the cellulose acetate coating was investigated
The optimum reaction condition for producing cellulose acetate were determined
The CA produced then converted into lacquer and underwent
A series of testing including impact, abrasion, adhesion and hardness.
Acacia mangium acetate lacquer shows better performance in all test except for the adhesion
This indicates that Acacia mangium can be used as an intermediate raw material for coating industry.
(A) (B)
Impact test for A. mangium cellulose acetate coating (A) and commercial cellulose acetate coating (B)
GRANT
UMS SBK Grant (SBK0115-SG-2014)
THE PHYSICAL AND MECHANICAL PROPERTIES OF LAMINATED ACACIA HYBRID VENEER LUMBER –LAVL Janshah Moktar
INTRODUCTION METHODOLOGY RESULTS & CONCLUSION
Water absorption characteristics and thickness swelling properties of LAVL was found to be influenced by the position of the trunk
Meanwhile, the result of mechanical properties study showed there were significant influenced (p < α = 0.05) on the Modulus of Elasticity, Modulus of Rupture and Compression Strength of the LAVL panel at different trunk portions
Acacia hybrid (crossbreed between Acacia mangium and Acacia auriculiformis) was used to produce Laminated Acacia hybrid Veneer Lumber (LAVL)
The main purposes of this study were to determine the fundamental physical and mechanical properties of Laminated Acacia hybrid Veneer Lumber (LAVL) panel made from three different trunk portions (basal, middle, and top)
Raw Material (Logs) Debarking
Log Cutting
Rotary Peeling-Veneer Veneer Treatment
Drying
Veneer Grading Veneer Cutting
Veneer Repair and Lay- Application of Adhesivesup
Cold Press Hot Press Conditioning
Edge Trimming and Sanding
LAVL panel Conditioning
Cutting of test samples
Basal Portion Trunk of Acacia Hybrid
Laminated Acacia Hybrid Veneer Lumber
SUMMARY
Aquilaria malaccensis is a tropical hardwood tree from the Thymelaeaceae family that is popular for its scented resinous heartwood or infected wood
This study found that A. malaccensis wood is composed of xylem and included phloem cells
Xylem cells consist of fibre, vessel elements, axial parenchyma and ray parenchyma cells, while the included phloem consist of sieve elements, companion cells, axial parenchyma and ray parenchyma cells
A. malaccensis is a resin producing tree, however, the tree does not form resin ductus or resin canal in the wood for resin secretion as tree defense
Invasion of pathogenic organisms into the stem from wounding or inoculation of inoculant will stimulate the included phloem tissues and xylem parenchyma cells to secret gaharu resin as tree defense, and gaharu resin formation in the wood is most probably formed symbiotically with the endophytes living in the wood cells
Gaharu Wounding Gaharu Cross-section Gaharu Radial-section
Finger- jointing
Side glue spreading
Face-back glue spreading
Clamping Conditioning
Mechanical test
Nitrocellulose is classified as UN Hazard Class 4:1
Nitrogen content of nitrated A.
mangium
GRANT
Fundamental Research Grant Scheme (FRGS)
ACKNOWLEDGEMENT
Universiti Malaysia Sabah
Ministry of Higher Education Malaysia (MOHE)
