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Excellent Compatibilization Effect of a Dual Reactive Compatibilizer on the Immiscible MVQ/PP Blends

chinese Journal of Polymer Science 2023年第7期41卷 1133-1141页

作者： Han-Bin Wang hong-chi tian Shi-Jia Zhang Bing Yu Nan-Ying Ning Ming tian Li-Qun Zhang Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials Beijing University of Chemical TechnologyBeijing100029China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029China Shandong Dawn Polymer Material Co. Ltd.Longkou265700China

Methyl vinyl silicone rubber (MVQ)/polypropylene (PP) thermoplastic vulcanizate (TPV) combines the good melt processability, recyclability and sealing performance as well as biosafety, stain and fluid resistance, and thus it is especially suitable in bio-safety areas and wearable electronic devices, etc. Nevertheless, the compatibility between MVQ and PP phases is poor. A big challenge on the compatibilization of MVQ/PP blends is that neither MVQ nor PP contains any reactive groups. In this study, a dual reactive compatibilizer composed of ethylenemethyl acrylate-glycidyl methacrylate terpolymer (EMA-co-GMA) and maleic anhydride grafted polypropylene (PP-g-MAH) was designed for the compatibilization of MVQ/PP blends. During melt blending, a copolymer compatibilizer at the MVQ/PP interface can be formed because of the in situ reaction between EMA-co-GMA and PP-g-MAH. The thermodynamic predict of its compatibilization effect through calculating the spreading coefficient of the in situ formed copolymer indicates that it can well compatibilize MVQ/PP blends. The experimental results show that under the GMA/MAH molar ratio of 0.5/1, the interface thickness largely increase from 102 nm for non-compatibilized blend to 406 nm, and the average size of MVQ dispersed phase largely decreases from 2.3 µm to 0.36 µm, the Tg of the two phases shifts toward each other, the mixing torque and mechanical properties of the blend are increased, all indicating its good compatibilization effect. This study provides a good compatibilizing method for immiscible MVQ/PP blends with no reactive groups in both components for the preparation of high performance MVQ/PP TPVs.

关键词： Methyl vinyl silicone rubber(MVQ) Polypropylene(PP) Immiscible polymer blends Reactive compatibilization

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Comparative lipidomic analysis of S. cerevisiae cells during industrial bioethanol fermentation

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Frontiers of Chemical Science and Engineering 2012年第4期6卷 461-469页

作者： Bin QIAO hong-chi tian Ying-Jin YUAN Key Laboratory of Systems Bioengineering(Ministry of Education) School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China

Variations in the composition and level of phospholipids （PLs） in yeast cells during industrial ethanol fermentation processes were analyzed. A comparative lipidomic method was used to investigate the changes in total cellular PLs during continuous and fed-batch/batch processes. The phospholipid metabolism in yeast changed during both processes, mainly due to the presence of longchain poly unsaturated fatty acids （PUFA） that contained phosphatidyglycerol （PG）, phosphatidylethanolamine （PE） and phosphatidylserine （PS）. The complexity of the media affected the growth of the yeast and the membrane composition. Yeast incorporated lots of exogenous saturated and PUFAs from the feedstock during the fermentations. During the continuous fermentation, there was an increase in PLs with shorter chains as the fermentation progressed and early in process there were more longchains. During the fed-batch/batch process, the PG species increased as the fermentation progressed. This is probably due to an inositol deficiency in the earlier part of the fermentation.

关键词： lipidomics systems biology phospholipids,stirred-tank saccharomyces cerevisiae biorefinery engi-neering

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Polyurethane-polysiloxane Copolymer Compatibilized SiR/TPU TPV with Comfortable Human Touch Toward Wearable Devices

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chinese Journal of Polymer Science 2023年第2期41卷 258-266页

作者： hong-Fang Zhang Qian Hao hong-chi tian Peng-Jun Yao Xue-Ying Liu Bing Yu Nan-Ying Ning Ming tian Li-Qun Zhang Key Laboratory of Carbon Fiber and Functional Polymers Ministry of EducationBeijing University of Chemical TechnologyBeijing10029China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029China Shandong Dawn Polymer Material Co. Ltd.Longkou265700China Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project Ningbo PolytechnicNingbo315800China

Because of its softness,wear resistance,biocompatibility,extremely comfortable human touch,thermoplastic vulcanizate(TPV)comprised of silicone rubber(SiR)and thermoplastic polyurethane(TPU)(SiR/TPU TPV)is especially suitable for wearable intelligent ***,developing good compatibilizer is still required to prepare high performance SiR/TPU *** this study,three kinds of polyurethane-polysiloxane copolymer(PU-co-PSi)with different contents of polysiloxane segment were selected,and their compatibilization effect on SiR/TPU blends was studied using nanomechanical mapping technique of *** results show that using PU-co-PSi with the highest content of polysiloxane segment(PU-co-HPSi),the interface thickness largely increases,and the average size of SiR dispersed phase largely decreases,indicating its good compatibilization *** using PU-co-HPSi as compatibilizer,SiR/TPU TPV with a fine SiR dispersed phase and good mechanical performance were successfully *** mechanism on the compatibilization effect of these PU-co-PSi on SiR/TPU TPVs was revealed.

关键词： Silicone rubber(SiR) Thermoplastic polyurethane(TPU) Compatibilization Thermoplastic vulcanizate(TPV)

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Assessment of prognosis and curative effect in patients with chronic severe hepatitis using the model for end-stage liver disease scores

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chinese Medical Journal 2006年第2期119卷 148-150页

作者： WU chi-hong tian Geng-shan XU Xiao-yuan YU Yan-yan LU Hai-ying Department of Infectious Disease Peking University First Hospital Beijing 100034 China

Severe hepatitis is the most severe liver disease, with poor prognosis and high mortality. We explored the practical use of the model for end-stage liver disease （MELD） on clinical and the molecular adsorbents recirculating system （MARS） on chronic severe hepatitis to predict the short-term prognosis of patients with chronic severe hepatitis using the MELD score and the curative effect of MARS treatment.

关键词： chronic severe hepatitis end-stage liver disease molecular adsorbents recirculating system

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“Slope-adsorption & plateau-pore filling” mechanism unlocking the potential of hard carbon anodes for “fast-charging & large-sized”batteries

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Science china Materials 2025年第1期 309-311页

作者： tian Liang Xiaoming Zhu Hubei Key Laboratory of Radiation Chemistry and Functional Materials School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology

To date, there has been no report on fast-charging and Ahlevel sodium-ion batteries (SIBs) by utilizing thick hard carbon anodes that demonstrate prolonged cycling life and high areal capacity at high rates. Further, the relationship among the complex structure of hard carbon, storage mechanism, and fastcharging performance in alkali-metal ion batteries has been a subject of ongoing debate [1,2].

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鸡蛋金属硫蛋白多肽桑葚汁饮料的研制

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畜牧与饲料科学 2016年第10期37卷 49-54页

作者：张根生常虹王芮池天奇张红蕾哈尔滨商业大学黑龙江省普通高等学校食品科学与工程重点实验室黑龙江哈尔滨150076

以含有金属硫蛋白(MTs)的鸡蛋为主要原料,通过单因素试验和正交试验,以感官评价为指标,确定鸡蛋金属硫蛋白多肽桑葚汁饮料最优制备工艺;以感官评价和沉淀率为指标,通过单因素试验和正交试验确定最优稳定性配方。结果表明,金属硫蛋白多... 详细信息

以含有金属硫蛋白(MTs)的鸡蛋为主要原料,通过单因素试验和正交试验,以感官评价为指标,确定鸡蛋金属硫蛋白多肽桑葚汁饮料最优制备工艺;以感官评价和沉淀率为指标,通过单因素试验和正交试验确定最优稳定性配方。结果表明,金属硫蛋白多肽桑葚汁饮料最佳配方为MTs多肽水解液添加量10%,桑葚汁添加量25%,白砂糖添加量12%,柠檬酸添加量0.15%,感官评分85.36;稳定性试验得出最佳配方为卡拉胶0.03%,果胶0.10%,黄原胶0.06%,CMC-Na 0.12%,在该条件下制成的饮料沉淀率为17.03%,感官评分为84.9,具有良好的风味。

关键词：金属硫蛋白多肽饮料正交试验稳定性

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单一及多组分混合物绿松石仿制品的光谱学特征研究

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光谱学与光谱分析 2025年第1期45卷 183-190页

作者：杨池玉汪田田张维肖汤维茜同济大学浙江学院浙江嘉兴314051

对市场新出现的一类仿制品进行了拉曼光谱、红外光谱、化学成分、紫外-可见-近红外吸收光谱分析,对其主要谱学特征进行了归纳总结。结果表明这类仿制品主要由重晶石、三水铝石、方解石粉末单一组分或多组分混合压制再经环氧树脂类或丙... 详细信息

对市场新出现的一类仿制品进行了拉曼光谱、红外光谱、化学成分、紫外-可见-近红外吸收光谱分析,对其主要谱学特征进行了归纳总结。结果表明这类仿制品主要由重晶石、三水铝石、方解石粉末单一组分或多组分混合压制再经环氧树脂类或丙烯酸酯类有机物胶结,并经人工染剂染色而成。红外光谱显示:单一矿物组分仿制品和绿松石差异明显,重晶石仿制品显示[SO_(4)]^(2-)的1078 cm^(-1)吸收峰等,方解石仿制品显示[CO_(3)]^(2-)的1476±cm^(-1)吸收峰等;多组分仿制品可见综合了多种矿物特征的吸收光谱,谱学特征复杂。根据缺失水峰,或仅显示三水铝石结构水OH-导致的3623、3528、3472和3388 cm^(-1)吸收峰,指纹区显示[SO_(4)]^(2-)、[CO_(3)]^(2-)相关吸收峰,可初步区分于绿松石。显微拉曼光谱测试结果表明多组分仿制品的不同测试位置矿物组成不同,可分别测试到三水铝石(3360、3432、3522、3614 cm^(-1))、重晶石(989 cm^(-1))、方解石(1088 cm^(-1))的特征峰,结合显微拉曼光谱及化学分析结果可进一步确认仿制品的具体矿物组成。紫外-可见-近红外吸收光谱表明样品均经人工染剂染色,显示633±、713±nm吸收宽峰或610±、675±nm吸收宽峰。

关键词：三水铝石重晶石方解石振动光谱微区分析

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Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu Xin Ma Shaojie tian Qinghe Cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

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遥感地学信息的分布式共享系统研究

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计算机科学 2003年第7期30卷 80-84页

作者：吴洪桥池天河方金云何建邦中国科学院地理科学与资源研究所北京100101 中国科学院计算技术研究所北京100080

Remote sensing image contains plenty Geo-information. Issuing the Geo-information on the Internet is abasic component of sharing RS Image's Geo-information. The most important of issuing the information is to organizeand manage RS image data efficiently according to their characteristics and peculiar Geo-information it them. Accord-ing to the properties of multi-sensor, multi-resolution, multi-spectrum and multi-epoch of RS image data and theirpeculiar Geo-information. This paper has constructed a solid index mechanism of "Pyramid, Block, Layer, Epoch"according to the properties of RS image data and established corresponding logic relation databases for RS image *** Geo-information of RS image data is reorganized via the solid index mechanism and logic database. Finally, theabove ideas are used in setting up an image database system to provide query and search for Geo-information on theInternet.

关键词：遥感地学信息分布式共享系统 Internet 计算机网络分布式计算

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Nanocarrier-mediated siRNA delivery:a new approach for the treatment of traumatic brain injury-related Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2538-2555页

作者： Jie Jin Huajing Zhang Qianying Lu Linqiang tian Sanqiao Yao Feng Lai Yangfan Liang Chuanchuan Liu Yujia Lu Sijia tian Yanmei Zhao Wenjie Ren Institute of Disaster and Emergency Medicine Tianjin UniversityTianjinChina Key Laboratory for Disaster Medicine Technology TianjinChina Henan Medical Key Laboratory for Research of Trauma and Orthopedics The Third Affiliated Hospital of Xinxiang Medical UniversityXinxiangHenan ProvinceChina Clinical Medical Center of Tissue Engineering and Regeneration Xinxiang Medical UniversityXinxiangHenan ProvinceChina Institutes of Health Central Plain Xinxiang Medical UniversityXinxiangHenan ProvinceChina School of Public Health Xinxiang Medical UniversityXinxiangHenan ProvinceChina

Traumatic brain injury and Alzheimer's disease share pathological similarities,including neuronal loss,amyloid-βdeposition,tau hyperphosphorylation,blood-brain barrier dysfunction,neuroinflammation,and cognitive ***,traumatic brain injury can exacerbate Alzheimer's disease-like pathologies,potentially leading to the development of Alzheimer's *** offer a potential solution by facilitating the delive ry of small interfering RNAs across the blood-brain barrier for the targeted silencing of key pathological genes implicated in traumatic brain injury and Alzheimer's disease.U nlike traditional approaches to neuro regeneration,this is a molecula r-targeted strategy,thus avoiding non-specific drug *** review focuses on the use of nanocarrier systems for the efficient and precise delive ry of siRNAs,discussing the advantages,challenges,and future *** principle,siRNAs have the potential to target all genes and non-targetable protein s,holding significant promise for treating various *** the various therapeutic approaches currently available for neurological diseases,siRNA gene silencing can precisely"turn off"the expression of any gene at the genetic level,thus radically inhibiting disease progression;however,a significant challenge lies in delivering siRNAs across the blood-brain *** have received increasing attention as an innovative drug delive ry tool fo r the treatment of brain *** are considered a potential therapeutic strategy with the advantages of being able to cross the blood-brain barrier,targeted drug delivery,enhanced drug stability,and multifunctional *** use of nanoparticles to deliver specific modified siRNAs to the injured brain is gradually being recognized as a feasible and effective *** this strategy is still in the preclinical exploration stage,it is expected to achieve clinical translation in the future,creating a new field of molecular tar

关键词： blood-brain barrier cognitive dysfunction exosomes gene silencing immunotherapy inorganic nanomaterials liposome nanoparticles neuroinflammation polymer nanoparticles stem cells

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