Desirable retanning system for aldehyde-tanned leather to reduce the formaldehyde content and improve the physical-mechanical properties

Sun, Xiaopeng; Jin, Yong; Lai, Shuangquan; Pan, Jiezhou; Du, Wei; Shi, Liangjie

doi:10.1016/j.jclepro.2017.12.058

Cited by 27 publications

(13 citation statements)

References 24 publications

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“…It is well known that introduction of tert-amino group to polymeric material such as starch, cellulose and/or polyester would certainly affect their hydrophilic character to some extent [21][22][23]. The magnitude of the hydrophilic-hydrophobic property of the modi ed polymer greatly depends on the number and type of alkyl group attached to the nitrogen atom of tert-amino group.…”

Section: Resultsmentioning

confidence: 99%

WITHDRAWN: Modification of Natural Leather Properties via Grafting Polymerization of Glycidyl Methacrylate Monomer

Hussein¹,

Alatawi²,

Albalawi³

et al. 2021

Preprint

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Chrome tanned leather was grafted by poly (glycidyl methacrylate) (L-g-PGMA) via emulsion polymerization technique and the grafting yield 26%. Epoxy content of the grafted leather samples was 69.4 mmol/100gm. The obtained L-g-PGMA samples were impregnated in different dibutyl amine solutions using amine/ epoxy molar ratio ranging from 0.5 up to 2.5. The obtained samples were assessed through varying nitrogen analysis, infrared spectroscopy, thermogravemetric analysis (TGA) analysis and scanning electron microscope. It was found that the nitrogen content of the treated leather samples increases by increasing the dibutyl amine concentration up to amine/ epoxy molar ratio of 2 after which it decreases. The water absorption, tensile strength and elongation (%) as well as hardness of the modified leather samples were studied and compared with the unmodified one. The colour strength values of dyed leather samples with acid dye were found to increase by grafting or by increasing the amine/epoxy molar ratio up to a value of 1.0 after which it decreases. On the contrary, the colour strength value of dyed leather sample with reactive dye sharply decreases after grafting with poly (glycidyl methacrylate). Samples grafted with glycidyl methacrylate and treated with dibutylacrylate amine exhibit increased colour strength which is directly related to the nitrogen content of the sample.

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Section: Resultsmentioning

confidence: 99%

WITHDRAWN: Modification of Natural Leather Properties via Grafting Polymerization of Glycidyl Methacrylate Monomer

Hussein¹,

Alatawi²,

Albalawi³

et al. 2021

Preprint

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show abstract

“…Masalah pencemaran kromium yang ada merupakan tantangan bagi para peneliti untuk mengembangkan sistem penyamakan alternatif yang meminimalkan kadar kromium limbah (Li, et al, 2019b;Ashokkumar, et al, 2012). Untuk memecahkan masalah pencemaran kromium secara mendasar, telah dilakukan aplikasi penyamakan bebas krom untuk mencapai proses penyamakan hijau (green tanning process) (Zhu, et al, 2020), seperti penyamakan logam non-krom (Qiang, et al, 2019), penyamakan aldehida (Sun, et al, 2018), penyamakan menggunakan tanin sintetis (Beghetto, et al, 2019;(Ferrero, et al, 2015). Namun, penyamakan kulit bebas krom ini mempunyai kekurangan, seperti stabilitas hidrotermal rendah, terbentuknya formaldehida bebas yang karsinogenik dan berbau menyengat sehingga kulitnya tidak dapat diterima pasar (Zhu, et al, 2020).…”

Section: Hasil Dan Pembahasan Kulit Samak Krom Dan Persyaratan Mutuunclassified

Bahaya Kromium Hexavalen (Cr VI) Pada Kulit Dan Produk Kulit Samak Krom Serta Upaya Pencegahannya

Murti

Sugihartono

2020

j.res.technol.ind.

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“…Pada penelitian ini, syntan digunakan sebagai retanning agent sehingga kulit yang dihasilkan berpotensi mengandung formaldehid bebas. Proses retanning merupakan tahapan yang penting dalam penyamakan kulit untuk meningkatkan sifat-sifat mekanis-fisis dari kulit tersamak (Sun et al, 2018). Formaldehid digunakan secara luas dalam sintesis bahan-bahan kimia untuk pembuatan kulit karena reaktivitas formaldehid yang tinggi dan murah (Yi et al, 2019).…”

Section: Identifikasi Kadar Krom (Vi) Formaldehid Dan Suhu Kerut Paunclassified

Penerapan sistem penyamakan kombinasi krom pada kulit ikan kakap merah (Lutjanus sp.) untuk bahan kulit atasan sepatu wanita

Murti

Susanto²,

Pratiwi

2020

MKKP

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Desirable retanning system for aldehyde-tanned leather to reduce the formaldehyde content and improve the physical-mechanical properties

Cited by 27 publications

References 24 publications

WITHDRAWN: Modification of Natural Leather Properties via Grafting Polymerization of Glycidyl Methacrylate Monomer

WITHDRAWN: Modification of Natural Leather Properties via Grafting Polymerization of Glycidyl Methacrylate Monomer

Bahaya Kromium Hexavalen (Cr VI) Pada Kulit Dan Produk Kulit Samak Krom Serta Upaya Pencegahannya

Penerapan sistem penyamakan kombinasi krom pada kulit ikan kakap merah (Lutjanus sp.) untuk bahan kulit atasan sepatu wanita

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