Results 21 to 30 of about 2,806 (181)
بررسی فاکتورهای موثر بر بهینهسازی تولید پلیمر زیستی پلیهیدروکسی بوتیرات-کو-والرات (PHBV) به روش پلاکت-برمن و بهینهسازی بهرهوری تولید با تکنیک کشت سلولی با تراکم بالا [PDF]
زیستشناسی کاربردی, 2022 پلیهیدروکسی آلکانواتها پلیمرهایی زیستتخریبپذیر و زیستسازگار هستند که توسط طیف گستردهای از سویههای باکتریایی تولید میشوند. در پژوهش حاضر، از سویه طبیعی باکتری Bacillus cereus تولید کننده کوپلیمر پلیهیدروکسی بوتیرات-کو-والرات (PHBV) با بهرهوری ...
ندا سینائی +2 more
doaj +1 more source
Scientific Reports, 2021 Worldwide, improper disposal of plastics is instigating environmental initiatives to combat plastics accumulation of in the environment and the world’s oceans.
Kjeld W. Meereboer +4 more
doaj +1 more source
Preparation and Characterization of Maleic Anhydride Grafted Poly(Hydroxybutirate-CO-Hydroxyvalerate) – PHBV-g-MA [PDF]
Materials Research, 2016 A compatibilizer agent was successfully produced by grafting maleic anhydride (MA) to poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) chains on a reactive processing by mechanical mixing, using a mixture of PHBV, MA and dicumyl peroxide (DCP) as ...
Thaís Larissa do Amaral Montanheiro +4 more
doaj +1 more source
Film blowing of PHBV blends and PHBV‐based multilayers for the production of biodegradable packages [PDF]
Journal of Applied Polymer Science, 2015 ABSTRACTPoly(hydroxy butyrate‐co‐valerate) (PHBV) is a biodegradable polymer that is difficult to melt process into films. Such difficulty is mirrored in the lack of literature on film blowing of PHBV‐ or PHBV‐based materials. To circumvent this problem, 70/30 wt % blends of PHBV with a biodegradable compound (PBSebT), or with poly(butylene adipate‐co ...
Mara Cunha +4 more
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Quercetin modified electrospun PHBV fibrous scaffold enhances cartilage regeneration
Journal of Materials Science: Materials in Medicine, 2021 It suggests that the poly (3-hydroxybutyric acid-co-3-hydroxyvaleric acid) (PHBV) scaffold can be used for cartilage tissue engineering, but PHBV is short of bioactivity that is required for cartilage regeneration.
Wei Chen +6 more
doaj +1 more source
Accelerated Weathering Effects on Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV/TiO2 Nanocomposites [PDF]
Polymers, 2020 The effect of accelerated weathering on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV-based nanocomposites with rutile titanium (IV) dioxide (PHBV/TiO2) was investigated. The accelerated weathering test applied consecutive steps of UV irradiation (at 340 nm and 0.76 W m−2 irradiance) and moisture at 50 °C following the ASTM D4329 ...
Ana Antunes +5 more
openaire +4 more sources
The Influence of Additives and Environment on Biodegradation of PHBV Biocomposites [PDF]
Polymers, 2022 The biodegradation of polyhydroxybutyrate-co-hydroxyvalerate (PHBV) ternary biocomposites containing nature-based plasticizer acetyl tributyl citrate (ATBC), heterogeneous nucleation agents—calcium carbonate (CaCO3) and spray-dried lignin-coated cellulose nanocrystals (L-CNC)—in vermicomposting, freshwater biotope, and thermophilic composting have been
Pavel Brdlík +3 more
openaire +2 more sources
Enhancing impact resistance and biodegradability of PHBV by melt blending with ENR
Scientific Reports, 2022 This research aims to enhance the mechanical characteristics of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by using epoxidized natural rubber (ENR-25 and ENR-50) as a toughening agent and polybutadiene (PB) grafted with maleic anhydride (MA) (3 ...
Napat Tomano +3 more
doaj +1 more source
eXPRESS Polymer Letters, 2022 Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a polyester, produced naturally by microorganisms, with excellent biocompatibility. Corona and radio-frequency (RF) plasma treatment were applied in order to improve the degradation process of PHBV ...
Ana Antunes +6 more
doaj +1 more source
Centrifugally spun PHBV micro and nanofibres [PDF]
Materials Science and Engineering: C, 2017 This paper reports the first study on centrifugal spinning of PHBV fibres. Fibres were spun from solution using a range of polymer concentrations, spin speeds and spinneret to collector distances. A PHBV polymer concentration of 25% w/v spun at 9000rmin-1 produced the highest quality fibres, with fibre diameters predominantly in the 0.5-3μm range.
Upson, SJ +4 more
openaire +4 more sources