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| 1 | Achieving higher performances without an external curing agent in natural magnolol-based epoxy resin显示文摘Bio-based epoxy thermoset prepared from renewable biomass raw materials can alleviate fossil energy crisis and reduce environmental pollution,which satisfies the needs of sustainable social development.In this study,a bio-based epoxy thermoset precursor(MGOL-EP) was synthesized from a naturally occurring magnolol through a facile and efficient one-step process.And the fully bio-based epoxy thermoset(MGOL-EP-SC) was obtained by self-curing without adding any other hardener.MGOL-EP-SC revealed an extremely high glass-transition temperature(T_(g)) of 265℃ and char yield of 53.2%(in N;),which were at the highest level among the fully bio-based epoxy thermosets reported so far.In addition,when the MGOL-EP was cured with 4,4’-methylenedianiline(DDM),T_(g)of the MGOL-EP/DDM was decreased by 61℃ and the other comprehensive performance had also been decreased,which was due to a reduction in biphenyl structure content and cross-linking density by adding the external curing agents.Moreover,the MGOL-EP-SC presented certain killing rate(48.4%) to Staphylococcus aureus.These findings provide a new design strategy for engineering high-performance and functional epoxy thermoset with high biomass content. | Qi Cao Zhihuan Weng Yu Qi Jiahui Li Wentao Liu Chengde Liu Shouhai Zhang Zhiyong Wei Yousi Chen Xigao Jian | 2022 | Chinese Chemical Letters2022，33，4： | 2 |
| 2 | Modification of aqueous acrylicpolyyrethane via epoxy resin postcrosslinking 显示文摘 | Shi Yuanchang Wu Yousi Zhu Zhiqian | 2003 | Journal of Aqueous of Applied Polymer Science2003，88，： | 1 |
| 3 | Synthesis of block copolymer from dissimilar vinyl monomer by stable free radical polymerization显示文摘 | Zou Yousi Lin Jian Zhuang Rongchuan Ye Jianliang Dai Lizong Zheng Lansun | | 0，，： | 1 |
| 4 | Poly(4-vinylpyridine)/carbon black composite as a humidity sensor显示文摘 | Li Yang Hong Lijie Chen Yousi Wang Huicai Lu Xin Yang Mujie | 2007 | Sensors and Actuators B2007，123，1： | 1 |
| 5 | Cultural orientations and historical changes as predictors of parenting behaviour 显示文摘 | Keller H Borke J Yousi R | 2005 | International Jour- nal of Behavioral Development2005，29，： | 1 |
| 6 | Effect of ammonium-salt solutions on the surface properties of carbon fibers in electrochemical anodic oxidation显示文摘 | Xin Qian Xuefei Wang Qin Ouyang Yousi Chen Qing Yan | 2012 | Applied Surface Science2012，，： | 1 |
| 7 | A fast response resistive thin film humidity sensor based on Poly (4- Vinylpyridine) and Poly ( Glycidyl Methacrylate) 显示文摘 | CHEN Yousi LI Yang YANG Mujie | 2007 | Journal of Applied Polymer Science2007，105，6： | 1 |
| 8 | Management of osteoradionecrosis of the mandible显示文摘 | Sanger JR Matloub HS Yousi NJ | 1993 | Clin Plast Surg1993，20，3： | 1 |
| 9 | Minjective rings显示文摘 | NICHOLSON W K YOUSI M F | 1999 | J Algebra1999，，187： | 1 |
| 10 | CONTROLLED SEQUENTIAL AND RANDOMRADICAL COPOLYMERIZATION OF STYRENE AND BUTYL METHACRYLATE BY ATOM TRANSFER RADICAL POLYMERIZATION显示文摘Diblock copolymers containing polystyrene (PSt) andpolybutyl methacrylate (PBMA)segnents and random coplymer of styrene (St) and butyl methacrylate (BMA) havebeen prepared by atom transfer radical polymerizanon (ATRP). Diblock copolymers ofBAN and St with predetermined molecular weight (1× 104ed.5 × 104)and narrowermolecular weight distribution(1.25~1.5) were obained The random copolymercompositions were determined by 1HNMR spectroscopy and the reactivity ratios wereevaluated by the extended Kelen-Tudos method to be γst=0.91, γBMA=0.32. | Zou yousi Zhuang Rongchuan Qiu Zhiping Dai Lizong(Department of Material Science, Xiamen University, Xiamen 361005) | 1998 | Chinese Journal of Reactive Polymers1998，7，2： | 0 |
| 11 | The Gas Sensitivity of Polypyrrole Film Fabricated by in Situ Polymerization显示文摘1 Results Polypyrrole (PPy) is a typical conducting polymer with high conductivity and good stability,and has been widely used for detection of gases including ammonia and nitroxide[1].However the reversiblity and selectivity of the response to these gases are always not satisfying.In the paper,conductive PPy film was deposited on the interdigital electrode modified by one bilayer of poly(diallyldimethylammonium chloride) and poly(sodium styrenesulfonate),by in-situ polymerization with FeCl3 as oxidizin... | Chen Yousi, Li Yang, Yang Mujie(Department of polymer science and engineering, Zhejiang University, Hangzhou 310027, China) | 2007 | 复旦学报(自然科学版)2007，46，5： | 0 |
| 12 | STUDY ON SYNTHESIS OF SELF CROSS LINKED POLYSTYRENE LATEX MICROSPHERES显示文摘Emulsifier-free emulsion polymerization of styrene in the presence of β -hydroxy propyl acrylate was studied. The emulsifier-free self cross linked polystyrene latex microspheres was obtained. Monomer conversion is higher than 90% when [St], [β-HPA], [KPS] is 2. 66, 0. 228, and 5. 8×10-3 mol/L respectively under 80℃ for 5h. The mono-dispersed latex particle diameter and colloidal particle concentration were given N = 3. 13×1013/cm3 by TEM analyse. The factors of influencing latex stability were discussed. Thecopolymer was characterized by IR and dissolution experiment. The apparent activation energy of polymerization and polymerization rate constant were obtained to be 78. 7KJ/mol and 514. 4L/mol·s respectively. | Dai Lizong Zou Yousi Fu Xuan Hong Manshui (Department of Chemistry, Xiamen University, Xiamen, 361005) | 1997 | Chinese Journal of Reactive Polymers1997，6，1： | 0 |
| 13 | Spinal fusion is an aerosol generating procedure显示文摘BACKGROUND Transmission of severe acute respiratory syndrome coronavirus 2 can occur during aerosol generating procedures.Several steps in spinal fusion may aerosolize blood but little data exists to quantify the risk this may confer upon surgeons.Aerosolized particles containing infectious coronavirus are typically 0.5-8.0μm.AIM To measure the generation of aerosols during spinal fusion using a handheld optical particle sizer(OPS).METHODS We quantified airborne particle counts during five posterior spinal instrumentation and fusions(9/22/2020-10/15/2020)using an OPS near the surgical field.Data were analyzed by 3 particle size groups:0.3-0.5μm/m^(3),1.0-5.0μm/m^(3),and 10.0μm/m^(3).We used hierarchical logistic regression to model the odds of a spike in aerosolized particle counts based on the step in progress.A spike was defined as a>3 standard deviation increase from average baseline levels.RESULTS Upon univariate analysis,bovie(P<0.0001),high speed pneumatic burring(P=0.009),and ultrasonic bone scalpel(P=0.002)were associated with increased 0.3-0.5μm/m^(3)particle counts relative to baseline.Bovie(P<0.0001)and burring(P<0.0001)were also associated with increased 1-5μm/m^(3)and 10μm/m^(3)particle counts.Pedicle drilling was not associated with increased particle counts in any of the size ranges measured.Our logistic regression model demonstrated that bovie(OR=10.2,P<0.001),burring(OR=10.9,P<0.001),and bone scalpel(OR=5.9,P<0.001)had higher odds of a spike in 0.3-0.5μm/m^(3)particle counts.Bovie(OR=2.6,P<0.001),burring(OR=5.8,P<0.001),and bone scalpel(OR=4.3,P=0.005)had higher odds of a spike in 1-5μm/m^(3)particle counts.Bovie(OR=0.3,P<0.001)and drilling(OR=0.2,P=0.011)had significantly lower odds of a spike in 10μm/m^(3)particle counts relative to baseline.CONCLUSION Several steps in spinal fusion are associated with increased airborne particle counts in the aerosol size range.Further research is warranted to determine if such particles have the potential to contain infectious viruses.Previous research has shown that electrocautery smoke may be an inhalation hazard for surgeons but here we show that usage of the bone scalpel and high-speed burr also have the potential to aerosolize blood. | Joanna Lind Langner Nicole Segovia Pham Ann Richey Yousi Oquendo Shayna Mehta John Schoeneman Vorhies | 2023 | World Journal of Orthopedics2023，14，5： | 0 |
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