Functionalization of syndiotactic polystyrene with succinic anhydride in the presence of aluminum chloride

Li, Juan; Li, Huaming

doi:10.1016/j.eurpolymj.2004.10.048

Cited by 33 publications

(19 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Li [ 16 ], under this condition conjugation with an aromatic group leads to a lower frequency, thus the keto group absorbs at 1,685 cm −1 , while the free acid exhibited bands at 1,710 cm −1 which are attributed to the absorbance of isolated and hydrogen-bonded carbonyl groups. Peaks near 2,900 cm −1 could be assigned to the carbon-hydrogen (C–H) stretching [ 15 ].…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Mechanical and Thermal Properties of Oil Palm Empty Fruit Bunch Fiber Poly(butylene adipate-co-terephtalate) Biocomposites by Matrix Esterification Using Succinic Anhydride

et al. 2012

View full text Add to dashboard Cite

In this work, the oil palm empty fruit bunch (EFB) fiber was used as a source of lignocellulosic filler to fabricate a novel type of cost effective biodegradable composite, based on the aliphatic aromatic co-polyester poly(butylene adipate-co-terephtalate) PBAT (EcoflexTM), as a fully biodegradable thermoplastic polymer matrix. The aim of this research was to improve the new biocomposites’ performance by chemical modification using succinic anhydride (SAH) as a coupling agent in the presence and absence of dicumyl peroxide (DCP) and benzoyl peroxide (BPO) as initiators. For the composite preparation, several blends were prepared with varying ratios of filler and matrix using the melt blending technique. The composites were prepared at various fiber contents of 10, 20, 30, 40 and 50 (wt %) and characterized. The effects of fiber loading and coupling agent loading on the thermal properties of biodegradable polymer composites were evaluated using thermal gravimetric analysis (TGA). Scanning Electron Microscopy (SEM) was used for morphological studies. The chemical structure of the new biocomposites was also analyzed using the Fourier Transform Infrared (FTIR) spectroscopy technique. The PBAT biocomposite reinforced with 40 (wt %) of EFB fiber showed the best mechanical properties compared to the other PBAT/EFB fiber biocomposites. Biocomposite treatment with 4 (wt %) succinic anhydride (SAH) and 1 (wt %) dicumyl peroxide (DCP) improved both tensile and flexural strength as well as tensile and flexural modulus. The FTIR analyses proved the mechanical test results by presenting the evidence of successful esterification using SAH/DCP in the biocomposites’ spectra. The SEM micrograph of the tensile fractured surfaces showed the improvement of fiber-matrix adhesion after using SAH. The TGA results showed that chemical modification using SAH/DCP improved the thermal stability of the PBAT/EFB biocomposite.

show abstract

Section: Resultsmentioning

confidence: 99%

Enhancement of Mechanical and Thermal Properties of Oil Palm Empty Fruit Bunch Fiber Poly(butylene adipate-co-terephtalate) Biocomposites by Matrix Esterification Using Succinic Anhydride

et al. 2012

View full text Add to dashboard Cite

show abstract

“…39,40 This result revealed the presence of ketone and carboxylic acid groups. 39,40 The residual characteristic peaks of SA at 1869 and 1777 cm À1 were not observed in the MWCNTs-BA spectra, suggesting that the SA ring was completely opened by a Lewis acid catalyst, in this case, AlCl 3 . 40 The characteristic peak at 1563 cm À1 was assigned to C]C ring stretching of the MWCNTs.…”

Section: Resultsmentioning

confidence: 94%

Water dispersible 1-one-butyric acid-functionalised multi-walled carbon nanotubes for enzyme immobilisation and glucose sensing

et al. 2012

View full text Add to dashboard Cite

“…Them ost widely used methods for the modification of aromatic polymers are Friedel-Crafts alkylation and acylation. These techniques are general to awide range of aromatic polymers and allow for the incorporation of valuable functionality,i ncluding benzoyl groups, [28] anhydrides, [29,30] branching junctions, [31,32] and more. [33][34][35][36] Tr aditionally,F riedel-Crafts alkylations or acylations on polymers result in significant broadening of the molecular-weight distribution (MWD) even at low amounts of functionalization as ac onsequence of chain scission caused by the harsh reaction conditions.…”

Section: Aromatic Polymersmentioning

confidence: 99%

C−H Functionalization of Commodity Polymers

et al. 2019

View full text Add to dashboard Cite

Synthetic manipulation of polymer substrates is one of the oldest and most reliable methods to increase the functional diversity of soft materials. Modifying the chemical structure of polymers that are already produced on a commodity scale leverages the current high‐volume and low‐cost production of commodity plastics for the discovery of modern materials. A myriad of polymer C−H functionalization methods have been developed which enable the modification of material properties on both a laboratory and industrial scale. More recently, driven by advances in C−H activation, photoredox catalysis, and radical chemistry, chemoselective approaches have emerged as a means to impart precise functionality onto commodity polymer substrates. This Review discusses the historical significance of and contemporary advances in the C−H functionalization of commodity polymers. The conceptual approach outlined herein presents exciting new directions for the field, including increasing the value of otherwise pervasive materials, uncovering entirely new material properties, and a viable path to upcycle post‐consumer plastic waste.

show abstract

Functionalization of syndiotactic polystyrene with succinic anhydride in the presence of aluminum chloride

Cited by 33 publications

References 22 publications

Enhancement of Mechanical and Thermal Properties of Oil Palm Empty Fruit Bunch Fiber Poly(butylene adipate-co-terephtalate) Biocomposites by Matrix Esterification Using Succinic Anhydride

Enhancement of Mechanical and Thermal Properties of Oil Palm Empty Fruit Bunch Fiber Poly(butylene adipate-co-terephtalate) Biocomposites by Matrix Esterification Using Succinic Anhydride

Water dispersible 1-one-butyric acid-functionalised multi-walled carbon nanotubes for enzyme immobilisation and glucose sensing

C−H Functionalization of Commodity Polymers

Contact Info

Product

Resources

About