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Engineering 2024年第8期39卷 244-252页

作者： Gaohui Liu Jie Guan Xianfeng Wang Jianyong Yu Bin Ding Shanghai Frontier Science Research Center of Advanced Textiles College of TextilesDonghua UniversityShanghai 201620China College of Materials Science and Engineering Qingdao UniversityQingdao 266071China

Biodegradable polylactic acid(PLA)melt-blown nonwovens are attractive candidates to replace nondegradable polypropylene melt-blown ***,it is still an extremely challenging task to prepare PLA melt-blown nonwovens with sufficient mechanical properties for practical ***,we report a simple strategy for the large-scale preparation of biodegradable PLA/poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(phbv)melt-blown nonwovens with high strength and excellent *** this process,a small amount of phbv is added to PLA to improve the latter’s crystallization rate and *** addition,when the phbv content increases from 0 to 7.5 wt%,the diameters of the PLA/phbv melt-blown fibers decrease significantly(with the proportion of nanofibers increasing from 7.7%to 42.9%).The resultant PLA/phbv(5 wt%phbv)melt-blown nonwovens exhibit the highest mechanical *** tensile stress,elongation,and toughness of PLA/phbv(5 wt%phbv)melt-blown nonwovens reach 2.5 MPa,45%,and 1.0 MJm3,*** importantly,PLA/phbv melt-blown nonwovens can be completely degraded into carbon dioxide and water after four months in the soil,making them environmentally friendly.A general tensile-failure model of melt-blown nonwovens is proposed in this study,which may shed light on mechanical performance enhancement for nonwovens.

关键词： PLA phbv Melt-blown Biodegradable Strength Toughness

phbv/火山岩/黄铁矿协同强化处理养殖尾水效果分析

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能源环境保护 2024年第1期38卷 151-158页

作者：张海耿王芳颖曹鑫圆孙雅婷许中硕张宇雷中国水产科学研究院渔业机械仪器研究所上海200092 大连海洋大学航海与船舶工程学院辽宁大连116000 盐城工学院海洋与生物工程学院江苏盐城224000 东华大学环境科学与工程学院上海200092

针对水产养殖尾水低碳氮比导致脱氮除磷效率不高的问题,研制了基于3-羟基丁酸酯和3-羟基戊酸酯共聚物(phbv)/火山岩/黄铁矿协同耦合的生物过滤装置,并对其处理养殖尾水的效果进行了分析。设计了2组不同滤料填充量的过滤装置,柱1装置从... 详细信息

针对水产养殖尾水低碳氮比导致脱氮除磷效率不高的问题,研制了基于3-羟基丁酸酯和3-羟基戊酸酯共聚物(phbv)/火山岩/黄铁矿协同耦合的生物过滤装置,并对其处理养殖尾水的效果进行了分析。设计了2组不同滤料填充量的过滤装置,柱1装置从上至下依次填充黄铁矿15 cm、混合滤料15 cm和火山岩5 cm,柱2装置填充黄铁矿10 cm、混合滤料15 cm和火山岩10 cm,分析了不同填料质量比对脱氮除磷效率的影响。结果表明,柱2装置对硝酸盐氮的平均去除率达到了97.8%,显著高于柱1装置(pphbv/火山岩/黄铁矿协同强化处理工艺可以实现养殖尾水中氮磷等营养盐的同步去除,为解决养殖尾水深度净化问题提供了新方法。

关键词： phbv 火山岩黄铁矿硝酸盐氮磷酸盐去除效率

CRYSTALLIZATION BEHAVIOR, THERMAL AND MECHANICAL PROPERTIES OF phbv/GRAPHENE NANOSHEET COMPOSITES

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Chinese Journal of Polymer Science 2013年第4期31卷 670-678页

作者： Bing-jie Wang Yu-jie Zhang Jian-qiang Zhang Qu-ting Gou Zong-bao Wang Peng Chen 顾群 Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences School of Petrochemical Technology Lanzhou University of Technology

Biodegradable poly（3-hydroxybutyrate-co-3-hydroxyvalerate）（phbv）/graphene nanosheet （GNS） composites were prepared via a solution-casting method at low GNS loadings in this work. Transmission electron microscopy revealed that a fine dispersion of GNSs was achieved in the phbv matrix. The thermal properties of the nanocomposites were investigated by thermogravimetric analysis, and the results showed that the thermal stability of phbv was significantly improved with a very low loading of GNSs. Nonisothermal melts crystallization behavior, spherulitic morphology and crystal structure of neat phbv and the phbv/GNSs nanocomposites were investigated, and the experimental results indicated that crystallization behavior of phbv was enhanced by the presence of GNSs due to the heterogeneous nucleation effect; however, the two-dimensional （2D） GNSs might restrict the mobility of the phbv chains in the process of crystal growing. Dynamic mechanical analysis studies showed that the storage modulus of the phbv/GNSs nanocomposites was greatly improved.

关键词： phbv Graphene nanosheets Nanocomposites Solution-casting films.

Synthesis and characterization of an environmentally friendly phbv/PEG copolymer network as a phase change material

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Science China Chemistry 2013年第6期56卷 716-723页

作者： XIANG HengXue WANG ShiChao WANG RenLin ZHOU Zhe PENG Cheng ZHU MeiFang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua University

Novel environmentally friendly poly（hydroxybutyrate-co-hydroxyvalerate） and poly（ethylene glycol）（phbv/PEG） copolymer networks were synthesized through free-radical solution polymerization with phbv diacrylate （phbvDA） and polyethylene glycol diacrylate （PEGDA） as macromers. The molecular structure of phbv/PEG copolymer network was characterized by Fourier transform infrared （FT-IR） and 1H nuclear magnetic resonance （1H NMR）. The morphology of the phbv/PEG co- polymer network was characterized by polarization optical microscopy. Thermal energy storage properties, thermal reliability and thermal stability were investigated by differential scanning calorimetry （DSC） and thermogravimetric analysis. The results indicated that the phbv/PEG copolymer network hindered the growth of PEG crystalline segments or phbv segments. phbv/PEG copolymer network had a higher latent heat enthalpy, which didn＇t reduce with the components of phbv in- creased. Moreover, phbv/PEG copolymer network still had good thermal stability even at 300 ~C. These results suggested that such environmentally friendly copolymer network would have wide applications in phase change energy storage materials.

关键词： phase change material environmentally friendly energy storage material copolymer network phbv PEG

Electrospun composites of phbv/pearl powder for bone repairing

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Progress in Natural Science:Materials International 2015年第4期25卷 327-333页

作者： Jingjing Bai Jiamu Dai Guang Li College of Material Science and Engineering Donghua University

Electrospun fi ber has highly structural similarity with natural bone extracelluar matrix(ECM). Many researches about fabricating organic–inorganic composite materials have been carried out in order to mimic the natural composition of bone and enhance the biocompatibility of materials. In this work, pearl powder was added to the poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(phbv) and the composite nano fi ber scaffold was prepared by electrospinning. Mineralization ability of the composite scaffolds can be evaluated by analyzing hydroxyapatite(HA)formation on the surface of nano fi ber scaffolds. The obtained composite nano fi ber scaffolds showed an enhanced mineralization capacity due to incorporation of pearl powder. The HA formed amount of the composite scaffolds was raised as the increase of pearl powder in composite scaffolds. Therefore, the prepared phbv/pearl composite nano fi ber scaffolds would be a promising candidate as an osteoconductive composite material for bone repairing.

关键词： Hydroxyapatite Pearl phbv Mineralization Composite nano fi bers scaffolds

phbv Crystallization under Injection Molding Conditions:Influence of Packing Pressure and Mold Temperature

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Journal of Renewable Materials 2018年第3期6卷 270-276页

作者： G.El hajj Sleiman G.Colomines R.Deterre I.Petit E.Leroy S.Belhabib UBL IUT NantesCNRSGEPEAUMR 6144OPERP2 Avenue du professeur Jean ROUXELBP 53944475 CarquefouFrance UBL CNRSGEPEAUMR 6144CRTT37Boulevard de l’Université44606 St Nazaire CedexFrance

Poly(3-hydroxy butyrate)-co-(3-hydroxy valerate)(phbv)is a biobased and biodegradable *** semicrystalline bioplastic could be a good candidate for the replacement of some commodity plastics derived from ***,the control of the conditions of its processing in order to obtain optimal properties of the finished products remains a current research *** objective of this work is to better understand the crystallization under injection molding conditions by inline measurements during the *** focused on the influence of two key processing parameters,namely,mold temperature and packing *** modeling of inline temperature measurements allowed an inverse estimation of the thermodynamic melting temperature of phbv and of the heat of crystallization’s variations with processing parameters.

关键词： Crystallization phbv injection molding inline measurement

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phbv/葡聚糖纳米药物载体的制备及表征

湖南大学学报（自然科学版） 2018年第6期45卷 113-119页

作者：刘海蓉张清卿周征胡薏冰张水寒戴瑶李永生湖南大学材料科学与工程学院湖南长沙410082 喷射沉积技术及应用湖南省重点实验室湖南长沙410082 湖南大学生物学院湖南长沙410082 湖南省中医药研究院湖南长沙410013

两亲性聚合物纳米颗粒作为疏水性抗肿瘤药物载体因其能够增强化疗效率并降低毒副作用而受到广泛关注.采用双乳液溶剂挥发法制备了聚(3-羟基丁酸酯-co-3-羟基戊酸酯)(phbv)/葡聚糖纳米颗粒,测得平均粒径为205.0±6.9nm,Zeta电势为-1.59±... 详细信息

两亲性聚合物纳米颗粒作为疏水性抗肿瘤药物载体因其能够增强化疗效率并降低毒副作用而受到广泛关注.采用双乳液溶剂挥发法制备了聚(3-羟基丁酸酯-co-3-羟基戊酸酯)(phbv)/葡聚糖纳米颗粒,测得平均粒径为205.0±6.9nm,Zeta电势为-1.59±0.12mV,纳米颗粒具有明显的壳核结构,粒径均一,分散性良好.将疏水性化疗药物顺铂包载后,其粒径及电势均无明显变化,载药量达19.3±2.9%.顺铂在模拟肿瘤细胞环境pH=5.5的磷酸盐缓冲液(PBS)中比正常细胞环境pH=7.4时释放更快,且累计释放周期均长达7d以上,表明该药物载体具有一定的pH响应性以及优异的缓释性能.细胞集落形成实验表明phbv/葡聚糖纳米药物载体具有良好的生物相容性,而载药纳米颗粒对肿瘤细胞的毒性明显高于正常细胞,表明该纳米颗粒对肿瘤细胞具有更强的杀伤作用.综上所述,phbv/葡聚糖纳米颗粒具有两亲性分子结构,合适的粒径及Zeta电势,显著的缓释效果,对肿瘤细胞具有pH响应性及更强的杀伤作用等优势,有望成为一种新型纳米药物载体,在癌症化疗中显著提高药物利用率并降低毒副作用.

关键词： phbv 葡聚糖纳米颗粒药物载体体外药物释放细胞毒性

phbv／纳米CaCO3共混物的热性能和力学性能

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东北大学学报（自然科学版） 2008年第7期29卷 1061-1064页

作者：徐孝旭张宝砚富露祥东北大学理学院辽宁沈阳110004 沈阳化工学院材料科学与工程学院辽宁沈阳110142

通过熔融共混的方法制备出了β-羟基丁酸酯和β-羟基戊酸酯共聚物(phbv)/纳米CaCO3共混物,采用DSC,TGA,DMA,拉力机和旋转流变仪等仪器对所制备的共混物的热性能和力学性能进行了研究.结果表明,气氛对phbv的热稳定性没有影响,纳米CaCO3... 详细信息

通过熔融共混的方法制备出了β-羟基丁酸酯和β-羟基戊酸酯共聚物(phbv)/纳米CaCO3共混物,采用DSC,TGA,DMA,拉力机和旋转流变仪等仪器对所制备的共混物的热性能和力学性能进行了研究.结果表明,气氛对phbv的热稳定性没有影响,纳米CaCO3的加入对phbv的玻璃化转变温度和热分解温度基本不产生影响.此外,当加入的纳米CaCO3质量分数为5%时,共混物的增韧效果比较好.

关键词： phbv 纳米CaCO3 共混物热稳定性力学性能

β-羟基丁酸与β-羟基戊酸共聚物(phbv)/蒙脱土纳米复合材料的结构与性能

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离子交换与吸附 2002年第6期18卷 481-486页

作者：陈广新郝广杰郭天瑛宋谋道张邦华吸附分离功能高分子材料国家重点实验室南开大学高分子化学研究所吸附分离功能高分子材料国家重点实验室天津300071

用溶液复合法成功地制备了插层型phbv/蒙脱土纳米复合材料。采用X射线衍射 (XRD) 和透射电子显微镜 (TEM) 研究了复合材料的结构,硅酸盐片层间距从1.8nm升至2.4nm左右。同时研究了复合材料的结晶,熔融,动态力学行为和力学性能,发现有机... 详细信息

用溶液复合法成功地制备了插层型phbv/蒙脱土纳米复合材料。采用X射线衍射 (XRD) 和透射电子显微镜 (TEM) 研究了复合材料的结构,硅酸盐片层间距从1.8nm升至2.4nm左右。同时研究了复合材料的结晶,熔融,动态力学行为和力学性能,发现有机蒙脱土的加入,可以加快phbv的结晶速度,降低熔融温度,使基体的玻璃化转变温度升高,提高了材料的力学性能,有机蒙脱土含量在3%时,其综合性能最佳。

关键词：纳米复合材料蒙脱土 phbv

不相容phbv/PS、phbv/PMMA结晶/非晶共混体系的结晶行为研究

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高分子学报 2010年第8期20卷 987-994页

作者：杨建王宗宝伍洋吴香发顾群中国科学院宁波材料技术与工程研究所宁波市高分子复合材料重点实验室宁波315201 慈溪市洁达纳米复合材料有限公司慈溪315303

在不同的共混比例、不同的结晶温度下对不相容phbv/PS、phbv/PMMA结晶/非晶共混体系的结晶行为做了系统的研究.研究发现当phbv含量为75wt%时,共混体系仍然和纯phbv一样生成环带球晶;而当phbv含量为50wt%时,共混体系在略低于非晶组分玻... 详细信息

在不同的共混比例、不同的结晶温度下对不相容phbv/PS、phbv/PMMA结晶/非晶共混体系的结晶行为做了系统的研究.研究发现当phbv含量为75wt%时,共混体系仍然和纯phbv一样生成环带球晶;而当phbv含量为50wt%时,共混体系在略低于非晶组分玻璃化转变温度时呈现花瓣状的球晶形貌;当phbv含量为25wt%时,phbv/PS体系出现不规则的晶体形貌,而phbv/PMMA体系在偏光显微镜下没有观察到晶体.在这种不相容共混体系中,非晶组分的分散状态以及共混比例对共混体系中phbv环带球晶的形成起到决定性的作用,而非晶组分对phbv球晶的片晶前端生长的影响是形成花瓣状球晶的主要原因.

关键词：不相容结晶/非晶共混体系 phbv 结晶行为