scholarly journals Environmentally friendly and breathable wet-laid hydroentangled nonwovens for personal hygiene care with excellent water absorbency and flushability

2018 ◽  
Vol 5 (4) ◽  
pp. 171486 ◽  
Author(s):  
Chao Deng ◽  
Wanjun Liu ◽  
Yinjiang Zhang ◽  
Chen Huang ◽  
Yi Zhao ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Environmentally Friendly ◽  
Air Permeability ◽  
Personal Hygiene ◽  
Water Absorbency ◽  
Excellent Performance ◽  
Wet Strength ◽  
Abrasion Test ◽  
Mechanical Bonding ◽  
Bonding Technique

Developing wet-laid papers with a good wet strength remains a longstanding challenge in the papermaking industry. In this study, hydroentanglement, a mechanical bonding technique is developed to consolidate the wet-laid fibre web. The results indicate that wet tensile strength, ductile stretching property, softness, air permeability and water absorbency of the wet-laid fibre web are significantly improved by hydroentanglement. In addition, the abrasion test shows that the dusting off rate of wet-laid fibre web can be effectively reduced through hydroentanglement. Moreover, the disintegration experiment proves that wet-laid hydroentangled nonwovens could be easily dispersed when compared with conventional carded hydroentangled nonwovens. Therefore, the new wet-laid hydroentangled nonwovens can maintain excellent performance in a wet state, showing a great potential for personal hygiene applications.

Effect of Hydroentanglement on Structures and Properties of Wet-Laid Paper Sheets

2019 ◽  
Vol 821 ◽  
pp. 201-205
Author(s):  
Chao Deng ◽  
Xian Gyu Jin
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Tensile Strength ◽  
Air Permeability ◽  
Water Absorbency ◽  
Structures And Properties ◽  
Before And After ◽  
Properties Of Materials ◽  
Scanning Electron

In this work, pulp/lyocell wet-laid paper sheets have been consolidated by hydroentanglement techniques. Scanning electron microscopy has been used to evaluate the structures of wet-laid paper sheets before and after hydroentanglement. Wet tensile strength along longitudinal (preferential) and transverse directions show the effect of hydroentanglement techniques on the mechanical properties of wet-laid paper sheets. In addition, the air permeability and water absorbency properties of materials have been evaluated. The results show that the structures of wet-laid paper sheets become fluffy and fiber entanglements increase after consolidation. The wet tensile strength values of wet-laid paper sheets at the longitudinal and transverse directions are increased by 109.0% and 78.7%, respectively after hydroentanglement. The air permeability and water absorbency of wet-laid paper sheets are increased by 957.6% and 137.0%.

scholarly journals Preparation and properties of hydrogel based on sawdust cellulose for environmentally friendly slow release fertilizers

2020 ◽  
Vol 9 (1) ◽  
pp. 139-152 ◽  
Author(s):  
Xiao Zhang ◽  
Yanlu Liu ◽  
Panfang Lu ◽  
Min Zhang
Keyword(s):  
Slow Release ◽  
Environmentally Friendly ◽  
Water Absorbency ◽  
The Novel ◽  
Structure And Properties ◽  
Nitrogen Release ◽  
Release Property ◽  
Slow Release Fertilizers ◽  
Grafting Copolymerization ◽  
Cross Linker

AbstractA novel hydrogel slow-release nitrogen fertilizer based on sawdust with water absorbency was prepared using grafting copolymerization. Urea was incorporated as nitrogen source in a hydrogel fertilizer. Potassium persulfate (KPS) and N,N᾽-methylenebis acrylamide (MBA) were used as the initiator and cross-linker, respectively. The structure and properties of the samples were characterized by XPS, EDS, SEM, XRD and FTIR. The effects of various salt solutions, ionic strength and pH on swelling behavior were discussed. The results showed that the largest water absorbency of the sample reached 210 g/g in distilled water. In addition, the sample had the good nitrogen release property. Thus, the novel environmentally friendly hydrogel fertilizer may be widely applied to agricultural and horticultural fields.

Effects on the Properties of Polyethylene Film Aging by Different Methods

2013 ◽  
Vol 830 ◽  
pp. 49-52 ◽  
Author(s):  
Chen Li ◽  
Sheng Ling Xiao
Keyword(s):  
Tensile Strength ◽  
Pilot Study ◽  
Tensile Property ◽  
Thermal Aging ◽  
Air Permeability ◽  
Polyethylene Film ◽  
Use Value ◽  
Moisture Permeability ◽  
Ultraviolet Aging

Aging of plastics occurs in use, it makes the performance degrade, and losing use value finally. In order to compare ultraviolet aging with thermal aging, we carry out a pilot study on the performance changes of PE film. The results demonstrated that the tensile property became lower under two aging methods, the tensile property during the thermal aging decreased by 6.07% but it was 15.08% in the ultraviolet aging at 120h, obviously the effects of the ultraviolet aging on the tensile strength were more significant, it declined faster. The air permeability curves were on the rise under the two aging methods, the results demonstrated that the effect of the ultraviolet aging on the air permeability rose slightly more than the thermal aging. The moisture permeability curves decreased firstly and then increased, but the values of the ultraviolet aging were higher.

scholarly journals The Effect of Borax Solution as Preservative to the Mechanical Properties of Bamboo

2020 ◽  
Vol 11 (2) ◽  
Author(s):  
M.A.P Handana ◽  
◽  
Besman Surbakti ◽  
Rahmi Karolina ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Bending Strength ◽  
Environmentally Friendly ◽  
Preservative Solution ◽  
Borax Solution ◽  
Preservative Solutions

The use of borax solution as a preservative in wood and bamboo materials is well known in the community. A borax solution is an environmentally friendly liquid that can dissolve in water, so it is suitable to be used as a preservative within cold or hot soaking techniques. The ability of borax to resist insects and fungus attacks on bamboo has been proven, but the effect of the solution on the strength of bamboo must also be investigated. This study conducts to investigate the effects of borax and its additives as preservative solutions to the mechanical properties of bamboos. The bamboos preservations were conducted by cold conditions of immersion, while the mechanical properties were performed to understand the effects of preservatives. The result of this study indicated that 30% to 50% borax in the preservative solution is sufficient to provide significant increase in strength for compressive strength, tensile strength, and bending strength of bamboo specimen. From this study, the use of borax solution in preserving the bamboos materials improved the quality of bamboos based on its mechanical properties.

scholarly journals The Effects of Tanning with Kepok Banana (Musa Paradisiaca L) Bunch on the Physical Quality of Rabbit Skin

2019 ◽  
Vol 8 (4) ◽  
pp. 12564-12567 ◽  
Keyword(s):  
Tensile Strength ◽  
Environmentally Friendly ◽  
National Standard ◽  
Tannin Content ◽  
Rabbit Skin ◽  
Physical Quality ◽  
Musa Paradisiaca ◽  
Tanning Process ◽  
Vegetable Tanning

Vegetable tanning is leather tanning using tanning agents derived from plants. Utilization of mimosa (as a source of tannins from Acacia wood) for tanning materials has various weaknesses in terms of influence on the environment. Kepok banana (Musa paradisiaca L.) bunch is one of the abundant banana waste and not yet utilized. Banana bunches contain 2-5% tannins so they have the potential to be used as tanning agent. Although the tannin content is not high, it is still possible to be used as tanning agent for small-sized skin, such as rabbit skin. This study aimed to determine the physical quality of rabbit skin that wastanned with banana bunches. The results showed that Kepok banana bunches can be used as a good tanning material that is environmentally friendly. The use of Kepok banana (Musa paradisiaca L.) bunch as tanning material had a significant effect (P <0.05) on physical quality of rabbit skin. With 25% Kepok banana (Musa pardisiaca L.) bunch as tanning agent, the tanning process could produce leather sheets that met Indonesian National Standard (SNI) no 06-0237-1989 with 1.17 mm of thickness, 4.7 mm of softness, 12.02 kg/cm of tear strength, 239.55 kg/cm2 of tensile strength, and 174.12% of elongation.

Flexible cellulose nanopaper with high wet tensile strength, high toughness and tunable ultraviolet blocking ability fabricated from tobacco stalk via a sustainable method

2018 ◽  
Vol 6 (27) ◽  
pp. 13021-13030 ◽  
Author(s):  
Qingbo Wang ◽  
Haishun Du ◽  
Fang Zhang ◽  
Yuedong Zhang ◽  
Meiyan Wu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Mechanical Performance ◽  
Residual Lignin ◽  
Wet Strength ◽  
High Toughness ◽  
Uv Blocking ◽  
Cellulose Nanopaper ◽  
Tobacco Stalk

Retaining residual lignin in nanopaper leads to UV-blocking ability and significantly improves mechanical performance, especially the toughness and wet strength.

Pengolahan Bioplastik Dari Campuran Gliserol, CMC Dan Karagenan

2021 ◽  
Vol 10 (3) ◽  
pp. 321-326
Author(s):  
Muhammad Abdul Zaky ◽  
Rini Pramesti ◽  
Ali Ridlo
Keyword(s):  
Tensile Strength ◽  
Film Thickness ◽  
Kappaphycus Alvarezii ◽  
Environmentally Friendly ◽  
Extraction Process ◽  
Alkaline Treatment ◽  
Plastic Packaging ◽  
A Value ◽  
Best Value ◽  
Experimental Laboratory

Indonesia menghasilkan 64 juta ton sampah di laut dan 3,2 juta ton di antaranya adalah plastik. Pencemaran tersebut mendorong pencarian plastik berbahan dasar ramah lingkungan yang dapat terurai . Bioplastik yang merupakan alternatif kemasan plastik dan bersifat ramah lingkungan. Berbagai bahan dasar pembuatan bioplastik telah ditemukan, salah satunya dasar karagenan. Penelitian ini bertujuan mengetahui karakteristik bioplastik hasil ekstraksi karagenan rumput laut Kappaphycus alvarezii dan mengetahui konsentrasi terbaik bioplastik hasil ekstraksi karagenan berdasarkan tebal film, kuat tarik dan persen pemanjangan. Metode yang digunakan adalah eksperimental laboratoris. Ekstraksi menggunakan perlakuan alkali dengan larutan KOH. Proses ekstraksi menghasilkan tepung karagenan yang digunakan sebagai bahan pembuatan bioplastik. Pembuatan bioplastik menggunakan campuran karagenan dengan 5 variasi massa karagenan, gliserol 10 ml dan 1,2 g CMC. Hasil ekstraksi menghasilkan rendemen 41,12%, kadar air 2,75%, kadar abu 19,10%, kekuatan gel 452,38 dyne/cm2dan viskositas 8,33 cP. Hasil penelitian tentang nilai ketebalan film bioplastik terbaik pada karagenan 3,5 g yaitu 0,093 mm, kuat tarik terbaik pada 1,5 g yaitu 2,587 Mpa, elongasi terbaik pada karagenan 1,5 g sebesar 44,992%. Berdasarkan data tersebut, hasil penelitian ini dapat diaplikasikan sebagai kemasan primer produk pangan. Sea pollution in Indonesia has increased every year with one of the pollutants is plastic. Indonesia produces 64 million tons of waste at sea and 3.2 million tons of which are plastic. The pollution is encouraging researchers to create plastic-based materials that are environmentally friendly and biodegradable. Bioplastics are an environmentally friendly alternative to plastic packaging. This study aims to determine the characteristics of bioplastics extracted from Kappaphycus alvarezii seaweed carrageenan and determine the best concentration of bioplastics from the extraction based on film thickness, tensile strength, and elongation percentage. The method that used in the research is experimental laboratory. The extraction uses alkaline treatment with KOH solution. The extraction process produces carrageenan flour which will be used as a bioplastic material. Making bioplastics using a mixture of carrageenan with 5 variations of concentration, glycerol 10 ml and 1.2 g CMC. The results of extraction showing 41.12% yield, 2.75% moisture content, 19.10% ash content, 452.38 dyne / cm2 gel strength, 8.33 cP viscosity. Carrageenan with the best value of bioplastic film thickness is 3.5 g which is 0.093 mm, the best tensile strength is achieved at 1.5 g with a tensile strength value of 2.587 MPa, the best elongation is achieved at 1.5 g with a value of 44.992%. Based on data showing that this research can be applied as primary packaging for food products.

scholarly journals Manufacturing Technique of Heat-Insulating and Flame-Retardant Three-Dimensional Composite Base Fabrics

2013 ◽  
Vol 8 (1) ◽  
pp. 155892501300800
Author(s):  
Jia-Horng Lin ◽  
Chen-Hung Huang ◽  
Ching-Wen Lin ◽  
Ching Wen Lou
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Melting Point ◽  
Flame Retardant ◽  
Three Dimensional ◽  
Weight Ratio ◽  
Air Permeability ◽  
Maximum Tensile Strength ◽  
Manufacturing Technique ◽  
Pu Foam

In this research, we create a PET/TPU/PU composite base fabric from a PET nonwoven base fabric, a TPU honeycomb grid, and a PU foam plank. First, the PET base fabric is made from 7D three-dimensional-hollow-crimp fiber (7D PET) and low-melting-point (low-Tm) fibers with weight ratio and number of lamination layers as the parameters. The hardness and rebound resilience rate of the PET nonwoven base fabric are 71% and 63.5%, respectively. The PET nonwoven base fabric's optimum air permeability is 240 cm3/s/cm2. The maximum tensile strength of the PET nonwoven base fabric with 9 layers of lamination is 39.8 kg/cm2, and when the weight ratio is either 4:6 or 3:7, changes to 40 kg/cm2. The PET/TPU/PU composite base fabric has a LOI of 33 when the number of lamination layers is 10, or when the low-Tm fiber content is 50%; the composite base fabric's average optimum thermal conductivity is 0.914 W/mK.

scholarly journals Tensile Strength and Dispersibility of Pulp/Danufil Wet-Laid Hydroentangled Nonwovens

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3931
Author(s):  
Chao Deng ◽  
R. Hugh Gong ◽  
Chen Huang ◽  
Xing Zhang ◽  
Xiang-Yu Jin
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fiber Length ◽  
Water Jet ◽  
Pulp Fibers ◽  
Wet Strength ◽  
Blend Ratio ◽  
Sewage Systems

Wet-laid hydroentangled nonwovens are widely used for disposable products, but these products generally do not have good dispersibility and can block sewage systems after being discarded into toilets. In this study, both pulp fibers and Danufil fibers are selected as we hypothesize that the high wet strength and striated surface of Danufil fibers would allow us to produce nonwovens with better dispersibility while having enough mechanical properties. The wet strength and dispersibility of nonwovens are systematically studied by investigating the influence of the fiber blend ratio, fiber length, and water jet pressure. The results indicate that the percent dispersion could be as high as 81.3% when the wet strength is higher than 4.8 N, which has been improved greatly comparing the percent dispersion of 67.6% reported before.

Fabrication of SiCp/Cu Composite by Powder Injection Molding

2011 ◽  
Vol 291-294 ◽  
pp. 721-724
Author(s):  
Jian Ming Yang ◽  
Hua Qiang Li ◽  
Hua Chen ◽  
Yi Qiang He ◽  
Li Chao Feng
Keyword(s):  
Tensile Strength ◽  
Injection Molding ◽  
Powder Injection Molding ◽  
Tensile Fracture ◽  
Powder Injection ◽  
Surface Microstructure ◽  
Excellent Performance ◽  
Sic Particles ◽  
Tensile Fractures

A SiCp/Cu composite with excellent performance is prepared by using the advanced powder injection molding technology. The microhardness and tensile strength of the composite are detected, and the surface microstructure and the tensile fractures are observed. The results show that SiC particles are uniformly distributed in Cu matrix and excellently bonded with the Cu matrix. With the increase of the SiC content, the microhardness of the composite is increased while the tensile strength is increased first and then decreased. A crackle source of the composite for tensile fracture mainly includes two kinds: cracking of the Cu matrix in vicinity of the SiC particles and debonding of an interface of the SiC particles and the Cu matrix.

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