GBR membrane of novel poly (butylene succinate-co-glycolate) co-polyester co-polymer for periodontal application

Fumed silica particles (SiO2) were directly added into poly (butylene succinate) (PBS) by melt mixing process. The effects of amount of fumed silica particles on mechanical properties of PBS/fumed silica composites, those are tensile strength, tensile modulus, impact strength as well as flexural strength, were investigated. It was found that the mechanical properties decreased with increasing fumed silica loading (0-3 wt%). In order to increase polymer-filler interaction, fumed silica was treated with 3-glycidyloxypropyl trimethoxysilane (GPMS), and its structure was analyzed by FT-IR spectrophotometry. The PBS/modified was found to possess better tensile strength, tensile modulus, impact strength and flexural strength that those of PBS/fumed silica composites.

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Wine By-Products as Raw Materials for the Production of Biopolymers and of Natural Reinforcing Fillers: A Critical Review

Polymers ◽

10.3390/polym13030381 ◽

2021 ◽

Vol 13 (3) ◽

pp. 381

Author(s):

Alessandro Nanni ◽

Mariafederica Parisi ◽

Martino Colonna

Keyword(s):

Critical Review ◽

Raw Materials ◽

Green Revolution ◽

Building Blocks ◽

Poly Lactic Acid ◽

Butylene Succinate ◽

Reinforcing Fillers ◽

Plastic Industry ◽

Review Reports ◽

By Products

The plastic industry is today facing a green revolution; however, biopolymers, produced in low amounts, expensive, and food competitive do not represent an efficient solution. The use of wine waste as second-generation feedstock for the synthesis of polymer building blocks or as reinforcing fillers could represent a solution to reduce biopolymer costs and to boost the biopolymer presence in the market. The present critical review reports the state of the art of the scientific studies concerning the use of wine by-products as substrate for the synthesis of polymer building blocks and as reinforcing fillers for polymers. The review has been mainly focused on the most used bio-based and biodegradable polymers present in the market (i.e., poly(lactic acid), poly(butylene succinate), and poly(hydroxyalkanoates)). The results present in the literature have been reviewed and elaborated in order to suggest new possibilities of development based on the chemical and physical characteristics of wine by-products.

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Temperature dependence of the rigid amorphous fraction of poly(butylene succinate)

RSC Advances ◽

10.1039/d1ra03775g ◽

2021 ◽

Vol 11 (41) ◽

pp. 25731-25737

Author(s):

Maria Cristina Righetti ◽

Maria Laura Di Lorenzo ◽

Patrizia Cinelli ◽

Massimo Gazzano

Keyword(s):

Body Temperature ◽

Temperature Dependence ◽

Human Body ◽

Room Temperature ◽

Rigid Amorphous Fraction ◽

Butylene Succinate ◽

Amorphous Fraction ◽

Human Body Temperature ◽

Rigid Amorphous

At room temperature and at the human body temperature, all the amorphous fraction is mobile in poly(butylene succinate).

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Open Pore Morphology Evolution in Poly(butylene succinate)/Chitin Nanocrystal Nanocomposite Foams

Journal of Polymers and the Environment ◽

10.1007/s10924-021-02208-0 ◽

2021 ◽

Author(s):

Hai Fu ◽

Dexian Yin ◽

Tianhao Wang ◽

Wei Gong ◽

Hongfu Zhou

Keyword(s):

Morphology Evolution ◽

Pore Morphology ◽

Butylene Succinate ◽

Nanocomposite Foams

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Development of FGF-2-loaded electrospun waterborne polyurethane fibrous membranes for bone regeneration

Regenerative Biomaterials ◽

10.1093/rb/rbaa046 ◽

2020 ◽

Author(s):

Chi Zhang ◽

Jianxiong Wang ◽

Yujie Xie ◽

Li Wang ◽

Lishi Yang ◽

...

Keyword(s):

Bone Regeneration ◽

Periodontal Regeneration ◽

Waterborne Polyurethane ◽

Related Factors ◽

Positive Meaning ◽

Chain Extenders ◽

Biomimetic Membrane ◽

Fibrous Membranes ◽

Green Chemical Synthesis ◽

Gbr Membrane

Abstract Guided bone regeneration (GBR) membrane has been used to improve functional outcomes for periodontal regeneration. However, few studies have focused on the biomimetic membrane mimicking the vascularization of the periodontal membrane. This study aimed to fabricate waterborne polyurethane (WPU) fibrous membranes loaded fibroblast growth factor-2 (FGF-2) via emulsion electrospinning, which can promote regeneration of periodontal tissue via the vascularization of the biomimetic GBR membrane. A biodegradable WPU was synthesized by using lysine and dimethylpropionic acid as chain extenders according to the rule of green chemical synthesis technology. The WPU fibers with FGF-2 was fabricated via emulsion electrospinning. The results confirmed that controlled properties of the fibrous membrane had been achieved with controlled degradation, suitable mechanical properties and sustained release of the factor. The immunohistochemical expression of angiogenic-related factors was positive, meaning that FGF-2 loaded in fibers can significantly promote cell vascularization. The fiber scaffold loaded FGF-2 has the potential to be used as a functional GBR membrane to promote the formation of extraosseous blood vessels during periodontal repairing.

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Thermoplastic Blends Based on Poly(Butylene Succinate-co-Adipate) and Different Collagen Hydrolysates from Tanning Industry—II: Aerobic Biodegradation in Composting Medium

Journal of Polymers and the Environment ◽

10.1007/s10924-021-02124-3 ◽

2021 ◽

Author(s):

Roberto Altieri ◽

Maurizia Seggiani ◽

Alessandro Esposito ◽

Patrizia Cinelli ◽

Vitale Stanzione

Keyword(s):

Chemical Characterization ◽

Aerobic Biodegradation ◽

Lepidium Sativum ◽

Biodegradation Rate ◽

Butylene Succinate ◽

Dog Bone ◽

Thermoplastic Blends ◽

Collagen Hydrolysates ◽

By Products ◽

Tanning Industry

AbstractTwo different raw hydrolyzed collagens (HCs), by-products of the Tannery industry, were investigated in blends with a bioplastic, as poly(butylene succinate-co-adipate) (PBSA), for the production of thermoplastic items for possible applications in agriculture. Chemical characterization of selected PBSA/HC blends and phytotoxicity assays on garden cress seeds (Lepidium sativum L.), used as spy species, were carried out; in addition, biodegradation and disintegration of specimens were assessed under controlled composting conditions at different temperature (58 and 25 °C). Although one of the HC investigated released sodium chloride in the aqueous extract, all PBSA/HC blends, up to 20 wt.% HC, resulted no-phytotoxic and showed considerable amounts of macro- and micro- nutrients for plants (mainly nitrogen). Regardless the amount added, HCs enhanced the biodegradation rate of PBSA/HC blends in compost at 58 °C compared to pure PBSA; lowering the temperature at 25 °C, as expected, biodegradation rate slightly lowered using the same compost. Most disintegration tests, performed on dog bone samples, corroborated the results of the biodegradation tests, thus suggesting that plastic mixtures could reasonably end their life cycle in a composting facility without decreasing the quality and the safety of the resulting compost. The outcomes achieved encourage the use of raw collagen hydrolysates from tanning industry in the production of PBSA-based thermoplastic blends to produce compostable items (mulching films and/or plant pots) for more sustainable uses in agriculture and/or plant nurseries. In addition, the use of these low-cost by-products can lower the cost of final product and give it fertilizing properties for plants given the presence of organic nitrogen in the hydrolysates.

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Crystallization, structures and properties of biodegradable poly (butylene succinate-co-butylene terephthalate) with a symmetric composition

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2020.124183 ◽

2021 ◽

Vol 260 ◽

pp. 124183

Author(s):

Cui Zheng ◽

Guixiang Zhu ◽

Ying Shi ◽

Li-Zhi Liu ◽

Minqiao Ren ◽

...

Keyword(s):

Butylene Succinate ◽

Butylene Terephthalate ◽

Structures And Properties ◽

Biodegradable Poly

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Thermal, Physical and Mechanical Properties of Poly(Butylene Succinate)/Kenaf Core Fibers Composites Reinforced with Esterified Lignin

Polymers ◽

10.3390/polym13142359 ◽

2021 ◽

Vol 13 (14) ◽

pp. 2359

Author(s):

Harmaen Ahmad Saffian ◽

Masayuki Yamaguchi ◽

Hidayah Ariffin ◽

Khalina Abdan ◽

Nur Kartinee Kassim ◽

...

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Loss Modulus ◽

Physical And Mechanical Properties ◽

Weight Percent Gain ◽

Weight Percent ◽

Esterification Reaction ◽

Butylene Succinate ◽

Kenaf Core ◽

Modified Lignin

In this study, Kraft lignin was esterified with phthalic anhydride and was served as reinforcing filler for poly(butylene succinate) (PBS). Composites with different ratios of PBS, lignin (L), modified lignin (ML) and kenaf core fibers (KCF) were fabricated using a compounding method. The fabricated PBS composites and its counterparts were tested for thermal, physical and mechanical properties. Weight percent gain of 4.5% after lignin modification and the FTIR spectra has confirmed the occurrence of an esterification reaction. Better thermo-mechanical properties were observed in the PBS composites reinforced with modified lignin and KCF, as higher storage modulus and loss modulus were recorded using dynamic mechanical analysis. The density of the composites fabricated ranged from 1.26 to 1.43 g/cm3. Water absorption of the composites with the addition of modified lignin is higher than that of composites with unmodified lignin. Pure PBS exhibited the highest tensile strength of 18.62 MPa. Incorporation of lignin and KCF into PBS resulted in different extents of reduction in tensile strength (15.78 to 18.60 MPa). However, PBS composite reinforced with modified lignin exhibited better tensile and flexural strength compared to its unmodified lignin counterpart. PBS composite reinforced with 30 wt% ML and 20 wt% KCF had the highest Izod impact, as fibers could diverge the cracking propagation of the matrix. The thermal conductivity value of the composites ranged from 0.0903 to 0.0983 W/mK, showing great potential as a heat insulator.

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Morphological, thermal, and thermomechanical properties of cellulose nanocrystals reinforced polylactide/poly [(butylene succinate)-co-adipate] blend composite foams

Functional Composite Materials ◽

10.1186/s42252-020-00011-z ◽

2020 ◽

Vol 1 (1) ◽

Author(s):

Mpho Phillip Motloung ◽

Simphiwe Zungu ◽

Vincent Ojijo ◽

Jayita Bandyopadhyay ◽

Suprakas Sinha Ray

Keyword(s):

Morphological Analysis ◽

Cell Structure ◽

Environmentally Friendly ◽

Processing Technique ◽

Thermomechanical Properties ◽

Environmental Concerns ◽

Butylene Succinate ◽

Peak Intensity ◽

Composite Foams ◽

Reinforcing Agent

Abstract This study examines the influence of cellulose nanocrystal (CN) particles on the morphological, thermal, and thermo-mechanical properties of polylactide (PLA)/poly [(butylene succinate)-co-adipate] (PBSA) blend foams prepared by casting and particulate leaching method using fructose as porogen particles. The morphological analysis showed an interconnected open-cell structure, with porosity above 80%. The crystallinity of the prepared foams was disrupted by the inclusion of CN particles as observed from XRD analyses, which showed a decrease in PLA crystal peak intensity. With regards to neat blend foam, the onset thermal degradation increased with the addition of CN particles, which also increased the thermal stability at 50% weight loss. Furthermore, CN acted as a reinforcing agent in improving the stiffness of the prepared blend foam. Overall, completely environmentally friendly foams were successfully prepared, as a potential material that can replace the current existing foam materials that pose many environmental concerns. However, there is a need to develop an environmentally friendly processing technique.

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