Polyphenolic resins prepared with maritime pine bark tannin and bulky-aldehydes

García, Danny E.; Glasser, Wolfgang G.; Pizzi, A.; Lacoste, Clément; Laborie, Marie‐Pierre

doi:10.1016/j.indcrop.2014.08.010

Cited by 27 publications

(20 citation statements)

References 18 publications

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“…Gambar 3 menunjukkan komposisi kadar padatan tertinggi adalah perbandingan TF (1:0,05) yaitu sebesar 6,20% dan semakin besar penambahan formaldehida ternyata memberikan pengaruh pada semakin kecilnya kadar padatan yang diperoleh. Hasil ini sejalan dengan penelitian yang menerangkan bahwa peningkatan jumlah aldehida terhadap tanin akan menyebabkan efisiensi reaksi tanin terhadap formaldehida menurun dan mengindikasikan adanya sejumlah aldehida yang tidak ikut bereaksi membentuk produk polimer (Garcia, Glasser, Pizzi, Lacoste, & Laborie, 2014).…”

Section: Gambar 2 Pengaruh Penambahan Resorsinol Terhadap Kadar Padaunclassified

Sintesis Perekat Tanin Resorsinol Formaldehida Dari Ekstrak Kulit Pohon Mangium Untuk Peningkatan Kualitas Batang Sawit

Rachmawati¹,

Sugita²,

Santoso³

2018

j.penelit.has.kehutan

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Oil palm trunk is lower in dimensional stability, density, physical, and mechanical properties than other wood species. Efforts to overcome the weakness of the oil palm trunk properties could be conducted through densification ABSTRAKBatang sawit memiliki stabilitas dimensi, kerapatan, sifat fisik, dan mekanik lebih rendah daripada jenis kayu lainnya. Upaya mengatasi kelemahan sifat batang sawit dapat dilakukan melalui pemadatan (densifikasi) menggunakan kempa panas dan penambahan bahan kimia atau perekat. Tujuan penelitian ini adalah untuk mendapatkan komposisi optimal tanin resorsinol formaldehida (TRF) dalam aplikasinya sebagai bahan perekat untuk peningkatan kualitas batang sawit. Tanin diekstraksi menggunakan air pada suhu 75°C kemudian dikopolimerisasi dengan resorsinol dan formaldehida.

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Section: Gambar 2 Pengaruh Penambahan Resorsinol Terhadap Kadar Padaunclassified

Sintesis Perekat Tanin Resorsinol Formaldehida Dari Ekstrak Kulit Pohon Mangium Untuk Peningkatan Kualitas Batang Sawit

Rachmawati¹,

Sugita²,

Santoso³

2018

j.penelit.has.kehutan

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“…Upaya untuk memperoleh bahan impregnasi berupa perekat bahan alam terus dilakukan antara lain dengan eksplorasi dan karakterisasi berbagai bahan yang mengandung senyawa fenolik seperti tanin yang berasal dari kulit pohon. Perekat alami dapat dibuat dari limbah kulit kayu, baik kulit kayu akasia (Feng, Cheng, Yuan, Leitch, & Xu, 2013), merbau (Santoso, Malik, & Hadi, 2015;Santoso, Sulastiningsih, Pari, & Jasni, 2016) maupun pinus (Garcia, Glasser, Pizzi, Lacoste, & Laborie, 2014). Kulit kayu kaya akan tanin yang dapat diformulasikan sebagai bahan perekat.…”

Section: Pendahuluanunclassified

Peningkatan Kualitas Kayu Sawit Dengan Perlakuan Kompregnasi Menggunakan Tanin Resorsinol Formaldehida

Rachmawati¹,

Sugita²,

Santoso³

2018

j.penelit.has.kehutan

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Indonesia is one of the largest palm oil producers in the world. The availability of oil palm trunk as a waste of the final crop-harvesting is enormous, inexpensive, and can be a source of sustainable alternative wood for various applications if it can be utilized properly. The weaknesses of oil palm wood characteristics are low in specific gravity, as well as physical and mechanical properties compared to other biomaterial especially wood. This paper studies the oil palm wood quality improvement through compregnation technique using tannin recorcinol formaldehyde (TRF). The study was carried out by coating sample surface of oil palm wood (5 cm × 5 cm × 2 cm) with TRF adhesive composition 1:0.05:0.05 (v/v/v) and followed by cold pressing for 10 mins at 10 kg/cm 2 pressure and then followed by hot pressing at 120 o C and pressure of 12 kg/cm 2 for 10 minutes. Density, hardness, thickness swelling as well as formaldehyde emission, were measured and compared to controls. Results showed that the compregnated wood significantly increased its density by 104.61%, and its hardness by six folds, and the thickness swelling decreased by 85.98%. The compregnated oil palm wood has also increased in strength quality, i.e from strength class V to III.

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“…PRI-3 was synthesized by open-ring reaction (S N 2) using propylene oxide (PO) in alkali media (pH: 12) at room temperature (20-22°C) as described by García et al [8]. The parameters of the derivatization were described in detail elsewhere [9].…”

Section: Hydroxypropyl Polyflavonoid (Pri-3)mentioning

confidence: 99%

“…However, polyflavonoid's DS cannot be considered as the unique factor affecting thermal decomposition of the blends. The substitution pattern on the C 15 polyflavonoid unit (see Figure 1) seems to be a key factor for polyphenols degradation [8,9]. The low M w distribution of the water-insoluble tannin fraction (PRI), as well as the lipophilic character of such polyflavonoids as a consequence of concomitants apparently affects the thermal stability of the blends in a differentiated manner.…”

Section: Tga Analysismentioning

confidence: 99%

“…Such selected properties might be considered in order to design functional materials based on key polyphenols properties such as O 2 -active barrier for food packaging, UV-filter for selected outdoor applications, antimicrobial surfaces for food industry, as well as functional films and plastic devices for agriculture. On the other hand, polyflavonoids are highly abundant in bark that is expected to play an important role in bioplastics engineering, and thermosetting systems [8,9]. However, limited solubility in organic solvents and molten thermoplastics, and low thermal resistance of polyflavonoids are well-known drawbacks for polymer formulation, that is why chemical modification with alkylene oxides enabling less polar derivatives highly desirable for biomaterial design [10].…”

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confidence: 99%

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Bark polyflavonoids from Pinus radiata as functional building-blocks for polylactic acid (PLA)-based green composites

García¹,

Carrasco²,

Salazar³

et al. 2016

Express Polym. Lett.

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The most important polymers in bioplastic engineering are aliphatic polyesters such as polylactic acid (PLA) [1]. Blending of PLA with other polymers such as polypropylene, natural rubbers, polyglycols (PEG), polyvinyl acetate, polyolefins, polymethyl methacrylate, and polycarbonate is an useful route towards modifying properties [2]. In addition, oligomers/polymers from lignocellulosic resources have been used as additives in order to reduce cost [3][4][5]. In fact, many advantages are recognized in binary and ternary blends regarding well dispersion into the PLA-matrix, and the nucleating effect of certain biopolymers which induced dramatic changes on mechanical properties [6]. Moreover, lignin and condensed tannin (polyflavonoids) have been successfully blended with PLA [7]. However, there are few reports which describe the effect of polyflavonoids on the PLA physicochemical properties. Polyphenols properties such as an- Abstract. Polylactic acid (PLA) was melt-blended with Pinus radiata unmodified and modified (hydroxypropyled) bark polyflavonoids in order to use such polyphenolic building-blocks as functional additives for envisaged applications. Rheological, morphological, molecular, thermal, and flexural properties were studied. Polyflavonoids improved blend processability in terms of short-time mixing. Furthermore, hydroxypropylated polyflavonoids improve miscibility in binary and ternary blends. Blend-composition affects crystallization-, melting-, and glass transition-temperature of PLA, as well as thermal resistance, and flexural properties of the blends. Polyflavonoids induced PLA-crystallization, and polymer-chain decomposition. Modified and unmodified bark polyflavonoids from radiata pine can be used successfully in PLA-based green composites beyond the food-packaging applications. The high compatibility between PLA and hydroxypropyled polyflavonoids highlights the potential of such phenolic derivatives for PLA-based material design.

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Polyphenolic resins prepared with maritime pine bark tannin and bulky-aldehydes

Cited by 27 publications

References 18 publications

Sintesis Perekat Tanin Resorsinol Formaldehida Dari Ekstrak Kulit Pohon Mangium Untuk Peningkatan Kualitas Batang Sawit

Sintesis Perekat Tanin Resorsinol Formaldehida Dari Ekstrak Kulit Pohon Mangium Untuk Peningkatan Kualitas Batang Sawit

Peningkatan Kualitas Kayu Sawit Dengan Perlakuan Kompregnasi Menggunakan Tanin Resorsinol Formaldehida

Bark polyflavonoids from Pinus radiata as functional building-blocks for polylactic acid (PLA)-based green composites

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