Pembuatan Dan Karakterisasi Komposit Bioplastik Berbasis Filler Cellulose Micro Fibers Rami

Syafri, Edi; Kasim, Anwar; Abral, Hairul; Asben, Alfi; Sudirman, Sudirman

doi:10.17146/jsmi.2018.19.2.4146

Cited by 6 publications

(5 citation statements)

References 12 publications

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“…As result of the second bleaching process, the fibers turned to be smoother. This alkalization method would be carried out together with mechanical treatment by ultra-sonication for 1 hour at a temperature of 60°C to reduce the particle size of the water chestnut fiber into microfibers (Harpendi, Padil and Yelmida, 2014;Syafri et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

The long microfiber of Water-chestnut (Eleocharis dulcis) as composite reinforcing material

2022

Int. J. Biosci.

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This preliminary research used long microfiber from water chesnut (Eleocharis dulcis) which is a weed plant in South Kalimantan, as a composite reinforcement material. This study aimed to study the effect of 6% NaOH alkalizing treatment and ultra-sonication on the properties of a long microfiber of water chesnut, especially for their chemical, physical, and mechanical properties. Firstly, the fiber of water chesnut was alkalizing by NaOH. This 6% NaOH treatment has reduced the moisture content of the fibers and their chemical components (lignin, hemicellulose, and cellulose) while the density and tensile strength of the fibers were increased. The process continued by bleaching and ultra-sonication the fiber to create a long microfiber. The water content of fibers after alkalizing treatment and ultra-sonication has met the SNI standard. Alkalizing treatment reduced the fiber size by 373.05 µm, and in the form of microfiber, before ultra-sonication was 4.28-5.96 µm and after ultra-sonication was 3.17-4.00 µm. The tensile strength of long microfiber could not measure but after alkalized, it increased significantly, from 354.25 to 3,282.10 MPa. Therefore, it is recommended that this long water chesnut microfiber is very good when used as a reinforcing material in the manufacture of composites because it will blend better with the matrix.

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Section: Methodsmentioning

confidence: 99%

The long microfiber of Water-chestnut (Eleocharis dulcis) as composite reinforcing material

2022

Int. J. Biosci.

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“…FTIR spectra of bleached cellulose was compared to that of acid-hydrolyzed CMFs (Figure 4b-d). Absorption bands observed at 3329 and 2900 cm −1 were due to OH stretching vibrations and C-H stretching vibration in the CH 2 and CH 3 groups of cellulose type 1, respectively [43][44][45][46]. The characteristic absorption band at 1640 cm −1 was due to absorbed moisture [47,48].…”

Section: Surface Chemical Groups Of Cmfsmentioning

confidence: 96%

Optimization of Hemp Bast Microfiber Production Using Response Surface Modelling

et al. 2022

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Non-wood biomass is particularly attractive as a cellulose source because of the lower lignin content. However, optimal cellulose extraction conditions are required as lignin content varies between plant sources. Further, the use of organic acids in place of harsh mineral acids is of interest in “greening” the cellulose production process. This study sought to establish optimum parameters for the extraction of cellulose microfibers (CMFs) from hemp (Cannabis sativa) biomass, using maleic and formic acids. Hemp fibers were pre-treated in NaOH (4 wt%) and aqueous chlorite in acetate buffer before ultrasonic treatment to break down bundles. The CMFs produced were compared with those generated from sulfuric acid hydrolysis. Response surface methodology (RSM) was used to determine combinations of three processing conditions, including acid concentration (45–64%), hydrolysis time (30–90 min), and temperature (45–65 °C). A central composite design (RSM-CCD) model with 21 experimental runs was optimized using MODDE 13.1 software. The model suitably described the data (R2 = 0.99; R2adj = 0.96). Microfibers with an average width of 6.91 µm, crystallinity range 40–75%, and good thermal stability were produced. Crystallinity was influenced by all three factors. The optimal crystallinity predicted by the model was 83.21%, which could be achieved using formic acid 62 wt% formic acid, 36 min hydrolysis time, and 47 °C hydrolysis temperature. These conditions resulted in a crystallinity degree of 82%. These data suggest formic acid can be used as an alternative to sulfuric acid for synthesis of cellulose microfibers from biodegradable hemp waste fibers.

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“…Proses komposit dapat mengoptimasikan jenis polimer, komposisi fraksi serat/polimer dan teknik pembuatan komposit. 13,14,15 Performa komposit dapat dipengaruhi oleh ikatan kimia antara polimer resin sebagai matriks dengan bahan penguat berbasis selulosa, dan juga oleh ikatan lain yang dapat terjadi yaitu ikatan fisika yang ditentukan oleh sifat-sifat matriks polimer dan bahan penguat. 16,17 Penelitian ini bertujuan untuk mensintesis komposit peredam suara dengan bahan penguat serat rami dan limbah serat rami serta matriks poliuretan, dengan menggunakan metode hand layup, dilanjutkan dengan karakterisasi kekuatan tarik dan densitas komposit serta performa absorpsi suara.…”

Section: Pendahuluanunclassified

PEMANFAATAN SERAT RAMI (Boehmeria nivea) SEBAGAI MATERIAL PEREDAM SUARA UNTUK BANGUNAN RUMAH

Arafah

Noerati

Sugiyana

2021

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Kebisingan diketahui sebagai salah satu masalah serius terhadap kesehatan manusia dan kenyamanan khususnya di lingkungan perumahan dan perkantoran. Serat rami dan limbah serat rami merupakan alternatif material ramah lingkungan yang dapat diaplikasikan sebagai peredam suara pada aplikasi bangunan rumah untuk mengurangi tingkat kebisingan. Penelitian ini bertujuan untuk mempelajari pembuatan komposit berbahan dasar penguat serat rami dan limbah serat rami serta matriks poliuretan untuk aplikasi material peredam suara. Metode pembuatan komposit menggunakan teknik hand lay-up dengan cara menuangkan matriks poliuretan pada bahan penguat serat dan limbah serat rami dalam cetakan dengan variasi perbandingan bahan penguat dan matriks sebesar: 85:15, 90:10, dan 95:5. Evaluasi terhadap komposit serat rami dan komposit limbah serat rami meliputi: uji kekuatan tarik, densitas dan koefisien absorbsi bunyi. Hasil kekuatan tarik tertinggi dicapai pada spesimen komposit berbasis serat rami sebesar 235,2 N pada perbandingan 95:5, sedangkan pada spesimen komposit berbasis limbah serat rami adalah sebesar 166,6 N pada perbandingan 95:5. Nilai densitas tertinggi dicapai oleh komposit serat rami pada perbandingan 95:5 sebesar 1,7 gr/cm 3 . Koefisien absorbsi bunyi tertinggi pada berbagai rentang frekuensi dicapai oleh komposit serat rami pada perbandingan 95:5 sebesar 0.988.

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Pembuatan Dan Karakterisasi Komposit Bioplastik Berbasis Filler Cellulose Micro Fibers Rami

Cited by 6 publications

References 12 publications

The long microfiber of Water-chestnut (Eleocharis dulcis) as composite reinforcing material

The long microfiber of Water-chestnut (Eleocharis dulcis) as composite reinforcing material

Optimization of Hemp Bast Microfiber Production Using Response Surface Modelling

PEMANFAATAN SERAT RAMI (Boehmeria nivea) SEBAGAI MATERIAL PEREDAM SUARA UNTUK BANGUNAN RUMAH

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