Pengaruh Proses Blending dan Ultrasonikasi terhadap Struktur Morfologi Ekstrak Serat Limbah Batang Kelapa Sawit untuk Bahan Baku Bioplastik (Selulosa Asetat)

Saputri, Lestari Hetalesi; Sukmawan, Romi

doi:10.21107/rekayasa.v13i1.6180

Cited by 6 publications

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“…These results are compatible with the aim of isolating cellulose from lignin and hemicellulose. The removal of lignin and hemicellulose is usually carried out in the production of cellulose-based materials such as microfiber [27], [28]. SPEKTRA: Jurnal Fisika dan Aplikasinya…”

Section: Resultsmentioning

confidence: 99%

MODIFICATION OF PURUN TIKUS (ELEOCHARIS DULCIS) AS A NATURAL FIBER COMPOSITE USING KMnO4 AND NaOH

Haryanti¹,

Suryajaya²,

Banowati³

et al. 2021

SPEKTRA

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The choice of natural fibers as a composite reinforcing material is related to the advantages of being cheap, abundant, renewable, and environmentally friendly. This research was conducted to study the effect of de-lignification treatment on the properties of purun tikus (Eleocharis Dulcis) fiber. Purun tikus fiber has been modified with the alkaline treatment of KMnO4 2% and NaOH 5%. This treatment was mainly applied to improve the physical and chemical properties of purun tikus fiber. Changes in chemical characteristics (water, lignin, cellulose, and hemicellulose), physical (density), mechanical (tensile strength), morphology, and elemental content of purun tikus before and after treated with alkaline were studied. The measurements showed an increase in water content and density while lignin, cellulose, and hemicellulose were decreased. Thus the alkaline treatment of KMnO4 2% and NaOH 5% reduced lignin, cellulose, and hemicellulose of the purun tikus fiber to reduce the size of the fibers, as shown in SEM measurements. There was a change in elemental content after being treated with KMnO4 2% and NaOH 5%. NaOH treatment was better than KMnO4 treatment in terms of removing lignin and hemicellulose in purun tikus fiber. Although the tensile strength of the purun fibers treated with KMnO4 2% and NaOH 5% were lower than untreated, with less lignin, cellulose, and hemicellulose, it is expected that these fibers will blend better in the composite and improved its mechanical properties.

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Section: Resultsmentioning

confidence: 99%

MODIFICATION OF PURUN TIKUS (ELEOCHARIS DULCIS) AS A NATURAL FIBER COMPOSITE USING KMnO4 AND NaOH

Haryanti¹,

Suryajaya²,

Banowati³

et al. 2021

SPEKTRA

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“…Serapan gugus ulur C=C terbaca pada daerah bilangan gelombang 1460,06 cm -1 , 1503,19 cm -1 dan 1583,86 cm -1 [34] . Gugus cincin aromatik C=C tampak pada daerah serapan 1500-1600 cm -1 [35] . Serapan C-O-C yang mengidentifikasi lignin tampak pada bilangan gelombang 1260,54 cm -1 , 1124,60 cm -1 dan 1031,30 cm -1 [32] .…”

Section: Karakterisasi Selulosa Menggunakan Spektrofotometer Infra Re...unclassified

Karakterisasi Selulosa dan Selulosa Asetat dari Limbah Cangkang Biji Pala (Myristica Fragransi) Aceh Selatan

Bhernama

2023

J.Ris.Kim.

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Nutmeg seed shell waste contains 21.34% cellulose, 12.93% lignin, 53.67% crude fiber, 6.16% ash, 0.11% phenol, and 0.38% carbonyl. The content of cellulose and lignin in the nutmeg shell waste is quite large, so it can be used as something of value. Cellulose can be synthesized into cellulose acetate. The use of cellulose acetate is very diverse, such as in the film industry, biodegradable plastics, paper coatings, metals, and glass, as an adhesive for topographic films as the main raw material in membrane synthesis processes. Therefore, it is necessary to characterize cellulose and cellulose acetate from nutmeg shell waste (Myristica fragrance) in South Aceh. The method used is in the form of cellulose isolation using the soxhletation process, then bleaching and hydrolysis processes are carried out, then it is synthesized into cellulose acetate. Characterization of cellulose by determining % yield, cellulose content, ash content, moisture content, FTIR, XRD. Characterization of cellulose acetate by determining the acetyl content and FTIR. The characterization results obtained ash content of 3.04%, moisture content of 15.55%, yield of 35.36% and 5.29% cellulose content. XRD characterization obtained a diffractogram peak at an angle of 2θ = 22.2111o, a crystallinity of 96% and a crystal size of 0.5292 nm. Characterization of the functional groups of cellulose in the form of stretching O-H, C-H and C-O groups which are at wave numbers 3331.04 cm-1, 2871.29 cm-1 and 1024.96 cm-1. Functional groups of cellulose acetate in the form of O-H, C=O, acetyl C-O, bent C-H and C-O groups are at wave numbers 3348.82 cm-1, 1719.61 cm-1, 1227.23 cm-1, 1369.50 cm-1 and 1028.62. The acetyl content is 39.18% and the degree of substitution is 2.65%.

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“…Pada selulosa, serapan spektrum infra merah terdapat pada daerah 3330-3500 cm -1 dengan gugus fungsi utama O-H, daerah 2800-2900 cm -1 dengan gugus fungsi C-H, daerah 1035-1060 cm -1 dengan gugus peregangan C-O dan puncak 1111 cm -1 merupakan gugus C-O glikosida [44]. Selulosa juga terdeteksi di daerah fingerprint sekitar puncak 1364 cm -1 dan puncak 1400 cm -1 yang menunjukkan gugus lenturan C-H dan lenturan CH2 [45]. Perubahan struktur selulosa akibat variasi NaOH ditunjukkan oleh peregangan O-H pada spektrum 3331, 3347, 3360 cm -1 dan peregangan C=O pada 1640-1650 cm -1 [43].…”

Section: Karakterisasi Ftirunclassified

“…Perbedaan utama gugus fungsi antara selulosa dengan lignin dan hemiselulosa terletak pada gugus C-O glikosida yang teramati untuk semua variasi NaOH, telah mempertajam intensitas serapan infra merah pada puncak 1111 -1125 cm -1 . Selain itu pergeseran puncak gugus O-H pada 3280 cm -1 ke 3360 cm -1 menunjukkan struktur kimia serat berubah ke struktur selulosa murni [45] ditandai dengan terhapusnya lignin dan hemiselulosa. b,c,d,e,f menunjukkan puncak-puncak karakteristik selulosa I, ditandai dari semua pola mengarah pada karakteristik puncak difraksi 2θ = 14,6 ᵒ (1-10), 16,7 ᵒ (110), 22,8 ᵒ (200), 34,2 ᵒ (004), yang mengkonfirmasi bahwa kisi kristal tipe I dari selulosa alam (native cellulose) tetap bertahan setelah ditreatmen hidrolisis alkali-asam [52] [53].…”

Section: Karakterisasi Ftirunclassified

Efek Variasi Konsentrasi NaOH pada Pembentukan Struktur Selulosa Cladophora sp.

et al. 2022

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The effect of NaOH concentration values was observed on the cellulose structure of Cladophora. Cladophora cellulose is synthesized from Cladophora sp., a green alga that lives in aquatic environments (seawater and freshwater) and soil surfaces (rocks and wetlands). Cellulose synthesis is carried out through the processes of bleaching, alkali hydrolysis, and acid hydrolysis. Bleaching uses NaClO2, alkaline hydrolysis uses NaOH with varying concentrations (0.4; 0.5; 0.6; 0.7; 0.8 M), while acid hydrolysis uses 5% HCl. The physical properties of cellulose were analyzed using Fourier Transformation Infra-Red (FTIR) to determine functional groups, X-Ray Diffraction (XRD) to determine crystal structure, and scanning electron microscopy (SEM) to determine the morphology of cellulose structure. FTIR pattern analysis showed peaks with OH group stretching at 3331, 3347, 3360 cm -1 , CH group stretching at around 2929 cm -1 , C = O stretching at 1640-1650 cm -1 , and CH2 flexural stretching at 1420-1430 cm -1 in all samples. XRD pattern analysis confirmed the recovery of Cladophora cellulose from a highly crystalline of sample c (NaOH 0.5 M) with a crystallinity index of 94.0 % and a particle size of 31.54 nm. SEM image analysis showed the surface morphology of Cladophora rod-shaped raw material with an average diameter of 21.30 µm. At the same time, Cladophora cellulose refers to the formation of a web-like nanofibril network with an average diameter of 30.63 nm. These results indicate that the synthesis has successfully removed lignin, hemicellulose, and amorphous group in Cladophora and formed crystalline cellulose confirmed by nano-sized cellulose.

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Pengaruh Proses Blending dan Ultrasonikasi terhadap Struktur Morfologi Ekstrak Serat Limbah Batang Kelapa Sawit untuk Bahan Baku Bioplastik (Selulosa Asetat)

Cited by 6 publications

References 0 publications

MODIFICATION OF PURUN TIKUS (ELEOCHARIS DULCIS) AS A NATURAL FIBER COMPOSITE USING KMnO4 AND NaOH

MODIFICATION OF PURUN TIKUS (ELEOCHARIS DULCIS) AS A NATURAL FIBER COMPOSITE USING KMnO4 AND NaOH

Karakterisasi Selulosa dan Selulosa Asetat dari Limbah Cangkang Biji Pala (Myristica Fragransi) Aceh Selatan

Efek Variasi Konsentrasi NaOH pada Pembentukan Struktur Selulosa Cladophora sp.

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