Synthesis, characterizations and kinetics of MOF‐5 as herbicide vehicle and its controlled release in PVA/ST biodegradable composite membranes

It is well known that bone morphogenetic protein (BMP) induces bone formation and requires for carriers. Poly-lactic acid / poly-glycolic acid (PLGA) is frequently used as the carriers of BMP. We developed a biodegradable composite PLGA membrane, which was containing oriented needle-like apatite with BMP. The composite membranes were implanted into the thigh muscle pouch of 3-week-old-mice. At 3 weeks after implantation, the implanted area was observed by optical microscopy. The composite membrane containing oriented needle-like apatite with BMP induced new bone formation. It seems that this composite membrane might be a scaffold of BMP and promoting the healing of bone defects.

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Facile Fabrication of Methylcellulose/PLA Membrane with Improved Properties

Coatings ◽

10.3390/coatings10050499 ◽

2020 ◽

Vol 10 (5) ◽

pp. 499 ◽

Cited By ~ 4

Author(s):

Panjie Guo ◽

Fen Wang ◽

Tongtong Duo ◽

Zhihong Xiao ◽

Airong Xu ◽

...

Keyword(s):

Tensile Strength ◽

Composite Membranes ◽

Hot Compression ◽

Mass Ratio ◽

X Ray Diffraction ◽

Good Thermal Stability ◽

Biodegradable Composite ◽

Microscopy Technique ◽

Nmr Techniques ◽

Facile Fabrication

With the rapid exhaustion of fossil resources, and environmental pollution relative to the use of fossil-based products, developing eco-friendly products using biomass and/or biodegradable resources is becoming increasingly conspicuous. In this study, ecofriendly and biodegradable composite membranes containing varying MC/PLA (methylcellulose/polylactic acid) mass ratios were prepared. The properties and structures of the MC/PLA membranes were studied by mechanical testing, 13C NMR techniques, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and hot compression. The MC/PLA membranes displayed markedly improved tensile strength and elongation at the MC/PLA mass ratio range of 99:1 to 9:1. The tensile strength and elongation of the MC/PLA (97:3) membrane was found to be the optimum, at 30% and 35% higher than the neat MC, respectively. It was also found that hot compression could improve the tensile strength and elongation of the membranes. At the same time, the membranes showed enough good thermal stability. In addition, the effect of MC/PLA mass ratio on morphologies of the membranes were studied by microscopy technique.

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Thermodynamics and kinetics of pretilachlor adsorption: Implication to controlled release from organobentonites

Applied Clay Science ◽

10.1016/j.clay.2020.105566 ◽

2020 ◽

Vol 190 ◽

pp. 105566 ◽

Cited By ~ 2

Author(s):

Chou Wu ◽

Xianfen Lou ◽

Aimin Huang ◽

Min Zhang ◽

Lin Ma

Keyword(s):

Controlled Release ◽

Thermodynamics And Kinetics ◽

Kinetics Of

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Evaluation of Microcrystalline Chitosan and Fibrin Membranes as Platelet-Derived Growth Factor-BB Carriers with Amoxicillin

International Journal of Polymer Science ◽

10.1155/2015/386251 ◽

2015 ◽

Vol 2015 ◽

pp. 1-13 ◽

Cited By ~ 3

Author(s):

Kazimiera H. Bodek ◽

Karolina M. Nowak ◽

Marcin Kozakiewicz ◽

Andrzej Bodek ◽

Marta Michalska

Keyword(s):

Growth Factor ◽

Mechanical Characteristics ◽

Composite Membranes ◽

Mechanical Tests ◽

Platelet Derived Growth Factor ◽

Sem Images ◽

Elongation At Break ◽

Microcrystalline Chitosan ◽

Kinetics Of

The aim of this study was to describe the mechanical and sorption features of homogeneous and composite membranes which consist of microcrystalline chitosan (MCCh) and fibrin (Fb) in various proportions as well as thein vitrokinetics of platelet-derived growth factor-BB (PDGF-BB) released from ten types of membranes in the presence or absence of amoxicillin (Am). The films were characterized by Fourier transform infrared (FTIR) spectroscopy, mechanical tests: breaking strength (Bs) and elongation at break (Eb), as well as SEM images, and swelling study. The influence of the form of samples (dry or wet) on Young’s modulus (E) was also examined. The homogeneous MCCh (M1) and composite M3 and M4 (MCCh : Fb = 2 : 1 and 1 : 1) membranes were characterized by good sorption properties and higher mechanical strength, when compared with Fb (M2) membrane. Connecting MCCh with Fb decreases release of PDGF-BB and increases release of Am. The most efficient release of PDGF-BB was observed in the case of M4 (the optimum MCCh : Fb ratio was 1 : 1) membrane. It was found that the degree of PDGF-BB release from the membrane is influenced by the physicochemical and mechanical characteristics of the films and by its affinity to growth factor PDGF-BB.

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