Effect of heterogeneity in high-molecular cellulose diacetate on the physico-mechanical properties of films

1989 ◽  
Vol 21 (1) ◽  
pp. 34-36
Author(s):  
E. A. Nekhaenko ◽  
V. I. Ismakova ◽  
L. S. Gembitskii ◽  
L. N. Verkhotina ◽  
N. L. Kuz'mina ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cellulose Diacetate

scholarly journals PEMBUATAN MEMBRAN FOTOKATALITIK DARI SELULOSA DIASETAT SERBUK GERGAJI KAYU JATI (TECTONA GRANDIS L.F.) DAN TIO2 UNTUK PENGOLAHAN LIMBAH BAKU AIR PDAM

2019 ◽  
Vol 1 (2) ◽  
pp. 20-24
Author(s):  
Fitriyatin Najiyah
Keyword(s):  
Mechanical Properties ◽  
Young Modulus ◽  
Tectona Grandis ◽  
Inversion Method ◽  
Cellulose Diacetate ◽  
Scanning Electronmicroscopy ◽  
Ft Ir ◽  
And Performance ◽  
Phase Inversion Method ◽  
Tectona Grandis L.F

                Membrane technology is growing rapidlybecause of its superiority and has beenwidely applied in various industries. Thewaste of teak sawdust is increasing as thefurniture industry develops, but its utilizationis not optimal. The purpose of this study wasto determine the effect of the addition of TiO2on the mechanical properties andperformance of photocalytic membranesfrom cellulose diacetate teak sawdust forprocessing PDAM water raw materials.Cellulose isolation from teak sawdust wascarried out by adding NaOH 17.5% (b / v)and continued with cellulose bleachingprocess. Cellulose teak sawdust wassynthesized into cellulose diacetate byacetylation method. Membrane production isdone by phase inversion method withvariations in the composition of TiO2 0.25%,0.5%, 0.75% and 1% and also variations inevaporation time 20 seconds, 25 seconds,30 seconds and 35 seconds. The photocyticmembrane of cellulose diacetate from teaksawdust and TiO2 produced wascharacterized by thickness test, mechanicalproperties and performance. Photocalyticmembranes with optimum conditions arecharacterized by SEM (Scanning ElectronMicroscopy), FT-IR (Fourier TransformInfraRed) and antibacterial effectiveness.The optimum composition of thephotocatalytic membrane is 16% cellulosediacetate, 4% formamide, acetone 79% and1% TiO2 with 30 seconds evaporation time.The mechanical properties obtained werestress 1562,50000 kN / m2, strains 0.01 m /m and Young Modulus 141593,4835 kN /m2. The membrane has an averagethickness of 0.04 mm, a flux value of 683.10L.m2.hari-1, a rejection value of 97.74% andan antibacterial effectiveness of 99.57%.  

Influence of elastomeric core–shell impact modifiers on mechanical properties of cellulose diacetate resin

Cellulose ◽  
2013 ◽  
Vol 20 (6) ◽  
pp. 3239-3245 ◽  
Author(s):  
Misuk Cho ◽  
Young Ill Oh ◽  
Jae Do Nam ◽  
Youngkwan Lee
Keyword(s):  
Mechanical Properties ◽  
Core Shell ◽  
Cellulose Diacetate

Improving the mechanical properties of cellulose diacetate fibers via using an ionic liquid as processing solvent

RSC Advances ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Na Liu ◽  
Baochun Wang ◽  
Shiyan Chen ◽  
Fuyou Ke ◽  
Ye Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Cellulose Diacetate

CDA fibers with improved mechanical properties via using [BMIM]Cl ionic liquid which can be directly used for the production of fabric yarns and garments were fabricated and characterized.

Synthesis and Properties of Cellulose Diacetate Graft Poly(p-dioxanone) Copolymers via the Couple-Grafting Copolymerization

2012 ◽  
Vol 549 ◽  
pp. 3-7
Author(s):  
Jiang Zhu ◽  
Xiu Li Wang
Keyword(s):  
Mechanical Properties ◽  
Isocyanate Group ◽  
Hydroxyl Groups ◽  
Cellulose Diacetate ◽  
Molecular Weights ◽  
H Nmr ◽  
Biodegradable Copolymer ◽  
Ft Ir ◽  
Grafting Copolymerization ◽  
Grafting Procedure

A new biodegradable copolymer of cellulose diacetate and poly(p-dioxanone) (PPDO) was prepared through a couple-grafting procedure. PPDO was functionalized with the isocyanate group, and then PPDO terminated with the isocyanate group was enabled to react with the hydroxyl groups of cellulose diacetate. The length of PPDO graft chains can be controlled easily by using the prepolymers of PPDO with different molecular weights. The resulting products were thoroughly characterized with FT-IR,1H-NMR. The mechanical properties of the copolymers were affected greatly by the length of PPDO segment.

Renewable Resource Using Cellulose Derivatives by Melt Process

2006 ◽  
Vol 326-328 ◽  
pp. 847-850 ◽  
Author(s):  
Sang Hwan Lee ◽  
S.Y. Lee ◽  
Mi Suk Cho ◽  
Jae Do Nam ◽  
Hyouk Ryeol Choi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Soybean Oil ◽  
Renewable Resource ◽  
Cellulose Derivatives ◽  
Processing Conditions ◽  
Cellulose Diacetate ◽  
Secondary Plasticizer

Melt processable plasticized cellulose diacetate (CDA) was prepared using triacetin (TA) as a plasticizer and its mechanical properties were characterized. The processability of the plasticized CDA was further enhanced by using a small amount of epoxidized soybean oil as a secondary plasticizer. The glass transition temperature of the plasticized CDA was observed at 50°C lower than that of the virgin CDA and the incorporation of 5 % of ESO also resulted in an additional 20°C decrease in the Tg value. In order to obtain practical processing conditions, a plasticizer content of more than 20 wt % should be used.

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