Construction of coal pitch-based HA-K grafted poly condensates and their excellent anti-temperature and viscosity-reducing properties

Humic acids(HAs)are widely used as filtrate and viscosity reducers in drilling fluids.However,their practical utility is limited due to poor stability in salt resistance and high-temperature resistance.Hightemperature coal pitch(CP)is a by-product from coal pyrolysis above 650℃.The substance's molecular structure is characterized by a dense arrangement of aromatic hydrocarbon and alkyl substituents.This unique structure gives it unique chemical properties and excellent drilling performance,surpassing traditional humic acids in drilling operations.Potassium humate is prepared from CP(CP-HA-K)by thermal catalysis.A new type of high-quality humic acid temperature-resistant viscosity-reducer(Graft CP-HA-K polymer)is synthesized with CP-HA-K,hydrolyzed polyacrylonitrile sodium salt(Na-HPAN),urea,formaldehyde,phenol and acrylamide(AAM)as raw materials.The experimental results demonstrate that the most favorable conditions for the catalytic preparation of CP-HA-K are 1 wt%catalyst dosage,30 wt%KOH dosage,a reaction temperature of 250℃,and a reaction time of 2 h,resulting in a maximum yield of CP-HA-K of 39.58%.The temperature resistance of the Graft CP-HA-K polymer is measured to be 177.39℃,which is 55.39℃ higher than that of commercial HA-K.This is due to the abundant presence of amide,hydroxyl,and amine functional groups in the Graft CP-HA-K polymer,which increase the length of the carbon chains,enhance the electrostatic repulsion on the surface of solid particles.After being aged to 120℃ for a specified duration,the Graft CP-HA-K polymer demonstrates significantly higher viscosity reduction(42.12%)compared to commercial HA-K(C-HA-K).Furthermore,the Graft CP-HA-K polymer can tolerate a high salt concentration of 8000 mg.L-1,measured after the addition of optimum amount of 3 wt%Graft CP-HA-K polymer.The action mechanism of Graft CP-HA-K polymer on high-temperature drilling fluid is that the Graft CP-HA-K polymer can increase the repulsive force between solid particles and disrupt bentonite's reticulation structure.Overall,this research provides novelty insights into the synthesis of artificial humic acid materials and the development of temperature-resistant viscosity reducers,offering a new avenue for the utilization of CP resources.

High-performance and robust high-temperature polymer electrolyte membranes with moderate microphase separation by implementation of terphenyl-based polymers

Acid loss and plasticization of phosphoric acid(PA)-doped high-temperature polymer electrolyte membranes(HT-PEMs)are critical limitations to their practical application in fuel cells.To overcome these barriers,poly(terphenyl piperidinium)s constructed from the m-and p-isomers of terphenyl were synthesized to regulate the microstructure of the membrane.Highly rigid p-terphenyl units prompt the formation of moderate PA aggregates,where the ion-pair interaction between piperidinium and biphosphate is reinforced,leading to a reduction in the plasticizing effect.As a result,there are trade-offs between the proton conductivity,mechanical strength,and PA retention of the membranes with varied m/p-isomer ratios.The designed PA-doped PTP-20m membrane exhibits superior ionic conductivity,good mechanical strength,and excellent PA retention over a wide range of temperature(80–160°C)as well as satisfactory resistance to harsh accelerated aging tests.As a result,the membrane presents a desirable combination of performance(1.462 W cm^(-2) under the H_(2)/O_(2)condition,which is 1.5 times higher than that of PBI-based membrane)and durability(300 h at 160°C and 0.2 A cm^(-2))in the fuel cell.The results of this study provide new insights that will guide molecular design from the perspective of microstructure to improve the performance and robustness of HT-PEMs.

“Grafting from”法制备高载量大孔弱阳离子交换层析介质

针对大孔聚合物层析介质孔径大、比表面积低而导致的蛋白结合容量低的问题,采用“graftingfrom”策略,以大孔聚丙烯酸酯微球为基质,通过氧化还原引发甲基丙烯酸在微球表面接枝聚合,制备了高载量弱阳离子交换层析介质.研究了单体浓度、过硫酸钾浓度及反应温度等因素对蛋白结合容量的影响.所得介质的蛋白静态结合容量和动态结合容量分别达到252.21和157.25mg/mL;同时发现具有一定离子交换容量的该类介质能够在0.2 mol/L NaCl缓冲液中保持100 mg/mL的蛋白结合容量.将该层析介质用于鸡卵清中溶菌酶的纯化,获得了较高的纯化效率.

EPDM-g-LSBR的制备及其增容EPDM/SBR并用橡胶的性能研究

采用熔融密炼接枝工艺,以三元乙丙橡胶(EPDM)为基体,低分子量液体丁苯橡胶(LSBR)为接枝物,制备了接枝聚合物EPDM-g-LSBR,研究了制备条件对接枝聚合物红外光谱和热失重行为的影响;将EPDM-g-LSBR作为相容剂用于EPDM/SBR的增容性共混,并与常用的商业化嵌段聚合物乙烯-乙酸乙烯酯(EVM)和苯乙烯-乙烯-丙烯-苯乙烯嵌段共聚物(SEPS)的增容效果进行了对比,研究了其用量对并用胶硫化特性和硫化胶力学性能的影响。结果表明,LSBR接枝到EPDM分子主链上,接枝量的变化未对产物的热降解温度造成显著影响;接枝物EPDM-g-LSBR增容后EPDM/SBR并用胶力学性能有明显改善,添加8份时,材料的拉伸强度和断裂伸长率比未添加相容剂的体系提高了24.3%和15%,邵A硬度由未添加的75.4降低到72.6。通过对混炼胶的断面进行扫描电镜分析发现EPDM-g-LSBR的加入使EPDM在SBR中的海岛分散结构消失,增加了两相的相容性。

Grafting Methyl Methacrylate onto Silk via Emulsion Graft Copolymerization Using a Diethylzinc Complex Initiator

Methyl methacrylate (MMA) was grafted onto silk fiber in a one-step emulsion system using a diethylzinc and 1,10-phenanthroline complex. The reaction conditions were investigated by varying temperature and initiator to monomer ratio. Fourier transform infrared (FTIR) spectrum, thermogravimetric analysis (TGA), and scanning electron microscopy (SEC) techniques were used to characterize the structure, thermal stability, and surface morphology of the obtained product, respectively. Grafting of MMA onto silk increased the thermal stability of silk. The FTIR spectrum and SEM images provided further evidence that MMA has been successfully grafted onto the silk fiber. A peak ascribed to the C=O stretching vibration of MMA was detected in the FTIR spectrum of grafted silk fiber, which was not present in the spectrum of pure silk fiber. Moreover, the SEM images illustrated the increase in diameter and surface roughness of grafted silk compared with pure silk. Lastly, the dyeing performance of the modified silk was significantly increased.

由质子化D-A型聚合物和MoS_(2)构建S型异质结实现高效光催化析氢

化石能源的过度消耗及其所引发的环境污染已经成为制约人类社会可持续发展的关键因素,因此开发绿色、可再生的能源已成为全球的迫切需求.氢能作为一种新型能源,具有能量密度高、清洁以及可持续等优点,备受研究者的关注.光催化分解水制氢技术能够将太阳能转化为可储存的清洁能源,被视为未来解决能源和环境问题的可行性方案.在过去几十年里,众多科学家致力于研发各种高效的析氢光催化剂,以推进光催化分解水制氢技术的实际应用.其中,S型异质结光催化剂因其快速的光生电荷转移效率和出色的氧化还原能力,被认为是提高光催化析氢性能的有效途径之一.本文以质子化、具有供体-受体(D-A)构型的PyDTDO-3共轭聚合物和二维层状MoS_(2)为原料,构建了一种S型异质结(PPMS),并将其用于光催化分解水制氢.红外光谱结果表明,质子化处理导致PyDTDO-3表面吸附了大量H^(+),使其Zeta电势降低,表面负电荷减少,更有利于MoS_(2)的吸附,进而形成具有紧密接触界面的PPMS S型异质结.在可见光照射下,PPMS-0.5%(即MoS_(2)占PyDTDO-3的质量百分数为0.5%)S型异质结的性能最佳,其光催化析氢效率达到75.4 mmol g^(–1)h^(–1),是纯PyDTDO-3的4.6倍.此外,在550 nm光激发下,PPMS-0.5%异质结的光催化析氢表观量子效率最高达到19.6%.光电流响应和电化学阻抗谱结果表明,PPMS异质结展现出了显著提升的光生电荷分离效率.通过密度泛函理论计算发现,PyDTDO-3和MoS_(2)具有不同的功函数,这导致费米能级间隙的产生,从而形成了内建电场.该内建电场有助于MoS_(2)上的电子自发转移到PyDTDO-3上,从而在PyDTDO-3与MoS_(2)的界面上产生了明显的差分电荷密度分布:PyDTDO-3表面带有负电荷,MoS_(2)表面则带有正电荷.在可见光激发下,得益于PyDTDO-3独特的D-A型结构,光生电子可以快速从供体(芘供体)的最高占据分子轨道传递到受体(DTDO受体)的最低未占据分子轨道(LUMO);随后,这些被激发的光生电子进入MoS_(2)的表面.利用飞秒瞬态吸收光谱研究动力学行为,结果表明,来自PyDTDO-3的LUMO电子转移加速了MoS_(2)价带的空穴消耗,这进一步证实了S型光生电荷分离机制.此外,与单组分PyDTDO-3和MoS_(2)相比,PPMS S型异质结具有较低的吉布斯自由能(ΔGH*,0.77 eV),表明它更有利于过渡态(H*)的形成以及分子氢在PPMS上的有效解吸.总之,PPMS S型异质结表现出促进的电荷定向迁移和增加的活性位点,共同增强了其光催化析氢性能.综上,本文首先对D-A构型的PyDTDO-3进行质子化处理,再与MoS_(2)复合,制备了具有紧密接触界面的S型PPMS异质结.该异质结结构显著促进了PyDTDO-3和MoS_(2)之间的电荷定向迁移;此外,通过引入MoS_(2)中丰富的S原子,增加了光催化析氢活性位点,从而大大提高了光催化析氢效率.本文为设计和开发新型高效的光催化析氢材料提供了新的思路和参考.

PERFORMANCE IMPROVEMENT OF POLYMERS BY THE ADDITION OF GRAFTED NANO-INORGANIC PARTICLES

An irradiation grafting method was applied for the modification of nanoparticles so that the latter can be added topolymeric materials for improving their mechanical performance using existing compounding techniques. The followingitems are discussed in this paper: (a) chemical interaction between the grafting monomers and the nanoparticles duringirradiation, (b) properties including modulus, yield strength, impact strength and fracture toughness of the resultantcomposites, and (c) possible morphological changes induced by the addition of nanoparticles. Though irradiation graftingpolymerization, nanoparticle agglomerates turn into a nano-composite microstructure (comprised of the nanoparticles and thegrafted, homopolymerized secondary polymer), which in turn builds up a strong interfacial interaction with the surrounding,primary polymeric matrix during the subsequent mixing procedure. Due to the fact that different grafting polymers broughtabout different nanoparticle/matrix interfacial features, microstructures and properties of the ultimate composites could thusbe tailored. It was found that the reinforcing and toughening effects of the nanoparticles on the polymer matrix can be fullybrought into play at a rather low filler loading in comparison to conventional particulate filled composites.

Preparation of Chelating Polymer Grafted Magnetic Adsorbent and Its Application for Removal of Pb(Ⅱ) Ions

A novel magnetic chelating adsorbent （CPMS） with iminodiacetate functionality was prepared by polymerization of glycidyl methacrylate-iminodiacetic acid （GMA-IDA） monomer with N, N-methylenebisacrylamide as crosslinker in the presence of monodisperse magnetic silica microspheres （MS）. CPMS was characterized by IR, SEM, VSM and TGA. The experimental results revealed that MS was embedded in the gel polymer, but the morphology of CPMS was irregular. The saturation magnetization for CPMS was found to be 28.4 emu/g, and the percentage of GMA-IDA polymer grafted on MS was about 46.5%. CPMS were shown to be efficient for the removal of Pb（II） ions at pH 3.0 - 6.0, and the adsorption data obeyed the Langmuir equation with a maximum adsorption capacity of 54.4 mg？g？1 at pH 5.0. Moreover, the adsorption rate of CPMS was fast and it took about 5 minutes to achieve adsorption equilibrium in aqueous solution of lower lead ions concentration.

Synthesis, Purification and Characterization of Amphiphilic and Microphase Separated Graft Copolymer Polystyrene-g-Poly(ethylene oxide)

The present paper covers the poly (ethylene oxide) macromer with vinyl benzyl terminal group (PEO-VB) prepared by deactivation of the alkoxide function of mono-functional 'living' PEO chains with vinyl benzyl chloride (VBC). The obtained macromers were subjected to careful purification and detailed characterization. A new kind of amphiphilic polystyrene-g-poly(ethylene oxide) (PS-g-PEO) with both mi-crophase separated and PEO side chains was synthesized from radical copolymerization of PEO-VB macromer with styrene monomer. An improved purification method, referred as 'selective dissolvation', was established for the isolation of graft copolymers from the grafting products, and the purity and yield of the purified copolymers were satisfactory. The well-defined structure of the purified copolymers was confirmed by IR, 1H NMR and GPC. The bulk composition of the graft copolymers was determined by a well-established first derivative UV spectrometry. Various experimental parameters controlling the copolymerization were also studied. The results indicate that the feed ratio of macromer to styrene (M/S) was the most important factor in determining the composition of the copolymers. Thus a series of PS-g-PEO with a wide range of bulk compositions were obtained simply by adjusting the value of M/S. As clearly indicated by transmission electron microscopy, this amphiphilic graft copolymers may readily form microphase separated structures.

Optimization of Grafted Fibrous Polymer as a Solid Basic Catalyst for Biodiesel Fuel Production

Grafted fibrous polymer with quaternary amine groups could function as a highly-efficient catalyst for biodiesel fuel (BDF) production. In this study, the optimization of grafted fibrous polymer (catalyst) and transesterification conditions for the effective BDF production was attempted through a batch-wise transesterification of triglyceride (TG) with ethanol (EtOH) in the presence of a cosolvent. Trimethylamine was the optimal quaternary amine group for the grafted fibrous catalyst. The optimal degree of grafting of the grafted fibrous catalyst was greater than 170%. The optimal transesterification conditions were as follows: The optimal molar quantity of quaternary amine groups, transesterification temperature, molar ratio of TG and EtOH, and primary alkyl alcohol were 0.8 mmol, 80°C, 1:200, and 1-pentanol, respectively. The grafted fibrous catalyst could be applied to BDF production using natural oils. Furthermore, the grafted fibrous catalyst could be used repeatedly after regeneration involving three sequential processes, i.e., organic acid, alkali, and alcohol treatments, without any significant loss of catalytic activity.

Poly (N-Isopropyl Acrylamide-<i>Co</i>-Vanillin Acrylate) Dual Responsive Functional Copolymers for Grafting Biomolecules by Schiff’s Base Click Reaction

This article reports on the synthesis of acrylate monomer from renewable material. Vanillin was selected to be the start material to produce new monomer called vanillin acrylate and abbreviated by (VA). It has been successfully investigated by 1H, 13C NMR, IR and UV and all results were in logic state. The next step was to synthetize three different thermo-responsive functional copolymers by incorporation of three different molar ratios of vanillin acrylate (10, 20, 30 mol%) with N-Isopropylacrylamide via free radical polymerization by AIBN as initiator in solution. All copolymers were deduced by 1NMR and IR and all showed the presence of aldehyde group. The copolymer was used for grafting of tryptophan and β-alanine through the chemical link between amino group and the active aldehyde group by click reactions to form Schiff’s base imine compounds. Moreover, polymers were also elucidated by 1HNMR, IR and UV, Size Exclusion Chromatography (SEC) was used for the molecular weight determination, differential scanning calorimeter (DSC) for glass temperature of solid polymers, XRD for crystallinity. UV-vis Spectroscopy was used for the determination of phase separation or the lower critical solution temperature (Tc) of polymers solution not only in deionized water but in pH5 and pH11. The mount of conversation and linked amino acid was determined by UV-vis Spectroscopy.

Synthesis of PGMA Microspheres with Amino Groups for High-capacity Adsorption of Cr(VI) by Cerium Initiated Graft Polymerization

Abstract A novel polyglycidylmethacrylate （PGMA） microspheres with high adsorption capacity of Cr（VI） was prepared by cerium（IV） initiated graft polymerization of tentacle-type polymer chains with amino group on polymer microspheres with hydroxyl groups. The micron-sized PGMA microspheres were prepared by a dispersion polym erization method and subsequently modified by ring-opening reaction to introduce functional hydroxyl groups. The polymer microspheres were characterized by scanning electron microscopy （SEM） and Fourier transform infrared spectroscopy （FTIR）. The results indicated that the polymer microspheres had an average diameter of 5 m with uniform size distribution. The free amino group content was determined to be 5.13 mmol·g^-1 for g;PGMA-NH2 microspheres by potentiometric and conductometric titration methods. The Cr（VI） adsorption results indicated that the graft polymerization of tentacle-type polymer chains on the polymer microspheres could produce adsorbents with high adsorption capacity （500 mg-g-l）. The polymer microspheres with grafted tentacle polymer chains have potenial application in large-scale removal of Cr（VI） in aqueous solution.

Surface Graft Copolymerization of Acrylic Acid onto Corona Treated Cotton Fabric

Acrylic acid was grafted onto the surface of cotton fabric after being short time treated by corona-discharge inair in the presence of initiator.The means of gas-phaseSO2 derivatization was used along with ESCA to deter-mine corona-discharge-induced-hydroperoxidegroups on the surface.The content of hydroperoxideshows a maxmium value at 15 sec.of corona-dischargetime.Effect of corona treatment time and various con-centration initlator on graft yield was studied.The addit-ion of initiator increases the graft yield.Acceleratedgraft with an increase in the concentration of Mohr’s saltshows that peroxide groups on the corona treated cottonfabric initiate graft copolymerization.

Advantageous tactics with certain probiotics for the treatment of graft-versus-host-disease after hematopoietic stem cell transplantation

Hematopoietic stem cell transplantation(HSCT)becomes a standard form of cellular therapy for patients with malignant diseases.HSCT is the first-choice of immunotherapy,although HSCT can be associated with many complications such as graft-versus-host disease(GVHD)which is a major cause of morbidity and mortality after allogeneic HSCT.It has been shown that certain gut microbiota could exert protective and/or regenerative immunomodulatory effects by the production of short-chain fatty acids(SCFAs)such as butyrate in the experimental models of GVHD after allogeneic HSCT.Loss of gut commensal bacteria which can produce SCFAs may worsen dysbiosis,increasing the risk of GVHD.Expression of G-protein coupled receptors such as GPR41 seems to be upre-gulated in the presence of commensal bacteria,which might be associated with the biology of regulatory T cells(Tregs).Treg cells are a suppressive subset of CD4 positive T lymphocytes implicated in the prevention of GVHD after allogeneic HSCT.Here,we discuss the current findings of the relationship between the modification of gut microbiota and the GVHD-related immunity,which suggested that tactics with certain probiotics for the beneficial symbiosis in gut-immune axis might lead to the elevation of safety in the allogeneic HSCT.

OJU Peyronie’s Disease in an Elderly Ghanaian Gentleman—A Case-Report and Literature Review

Background: Peyronie’s disease is characterized by fibrous plaque formation in the tunica albuginea, leading to penile curvature and sexual dysfunction. Surgical correction is often required in cases of severe deformity or significant functional impairment. Aim: To present the case of a patient with severe Peyronie’s disease who underwent surgical correction using an autologous fascia lata graft. Case Presentation: We report the case of a 77-year-old Black-African gentleman with Peyronie’s disease, presenting with a self-reported penile curvature of 70 degrees and significant sexual frustration. He was managed surgically with plaque excision followed by a tunica albuginea patch using a subcutaneously harvested autologous fascia lata graft, all performed in a single surgical session. Conclusion: This case highlights the importance of individualized surgical planning and patient-specific considerations in achieving optimal outcomes in the management of Peyronie’s disease, particularly in cases requiring grafting for severe curvature.

Application of the Shrinking Particle Model for the Evaluation of Molecular Recyclability of PET versus Semi-Aromatic Polyesters

The molecular recyclability of poly (ethylene terephthalate) (PET) and three semi-aromatic polyesters poly (phloretic acid) (poly-H), poly (dihydroferulic acid) (poly-G), and poly (dihydrosinapinic acid) (poly-S) is evaluated in this study. PET is an extensively used aromatic polyester, and poly-H, poly-G, and poly-S can be considered semi-aromatic poly (lactic acid) modifications. All these polyesters have been depolymerized at neutral pH and by acid- and base-catalyzed hydrolysis at two temperatures, i.e., 50˚C and 80˚C. Base-catalyzed depolymerization of virgin PET leads to an isolated yield of 38% after 48 hours of reaction at 80˚C. Contrary to these results for PET, almost all the monomers of the semi-aromatic polyesters poly-H, poly-G, and poly-S are recovered with isolated yields larger than 90% at the same temperature after 15 minutes in a facile manner. A shrinking particle model used to determine the global kinetics of the base-catalyzed depolymerization showed that the rate rises with increasing temperature. Using the shrinking particle model, the intrinsic reaction rate constants were determined. It has been demonstrated that the rate coefficients of the depolymerization of the semi-aromatic polyesters poly-H, poly-G, and poly-S are between 2 and 3 orders of magnitude higher than those for PET.

Synthesis of Temperature- and pH-Sensitive Graft Copolymer Containing 2-(Diethylamino)ethyl Methacrylate and N-Vinylcaprolactam onto Silicone Rubber

Silicone rubber films were modified by the consecutive grafting of 2-(diethylamino)ethyl methacrylate (DEAEMA) and N-vinylcaprolactam (NVCL) using direct method on two steps with gamma-rays. The effect of absorbed dose and monomer concentration on grafting degree was determined. The grafted samples were verified by FTIR-ATR spectroscopy and swelling;thermal properties were analyzed by DSC and TGA. The stimuli-responsive behavior was studied by swelling and/or DSC. Thermo- and pH-sensitive films of (PP-g-DEAEMA)-g-NVCL presented a pH critical at 3.2 and LCST around 63.5℃.

Surface Graft Polymerization of PET and PE Fibers by UV Irradiation and Their Characteristics

Polyethylene terephthalate(PET)and polyethylene(PE)fibers were surface photo-grafted with acrylic acid(AA)by using UV irradiation photochemical initiationduring a continuous winding process within 1-2 min-utes.The grafted fibers were characterized by measure-ments of dye uptaking,moisture regain,pull-out forcesof monofilament from cured matrix,as well as by analy-sis of ESCA and ATR-FTIR spectra.All these resultsconfirm that the surface behavior of the UV-irradiationgrafted fibers was greatly improved.It was also provedthat the original excellent mechanical properties of the fi-bers were well-retained after the surface grafting treat-ment.

表面接枝C—S—H的岩沥青对高温油井水泥石力学性能的影响

研究了表面接枝C—S—H的岩沥青对高温油井水泥石力学性能和微观结构的影响,采用压力试验机及XRD、TG、SEM和EDS对油井水泥石的力学性能和微观结构进行了测试和表征。研究结果表明,与纯水泥石相比,掺入1%未改性岩沥青的水泥石3 d抗压强度下降了2.98%,而掺入1%表面接枝C—S—H岩沥青的水泥石3 d抗压强度提高了4.26%。物相分析和热重实验表明,表面接枝C—S—H岩沥青的加入不会引起水化产物类型的变化,而掺量为3%表面接枝C—S—H的岩沥青水泥石养护3 d的失重量比纯水泥石高1.01%,说明表面接枝C—S—H的岩沥青可以促进水泥的水化。水泥石的微观形貌和元素分析表明,未改性岩沥青在180℃下热解导致沥青颗粒破碎,而接枝C—S—H的岩沥青表面形成的富Si层可以避免沥青颗粒因气孔而引起破碎,使得未改性岩沥青水泥石界面处的C元素含量较接枝C—S—H的岩沥青水泥石高29.14%,未改性岩沥青水泥石基体中C元素含量较接枝C—S—H的岩沥青水泥石高13.76%。

经皮微创、Wiltse间隙微创入路与传统切开后入路治疗老年胸腰椎骨折临床疗效

目的探讨经皮微创、Wiltse间隙微创及传统切开后入路联合伤椎椎弓根内固定术治疗老年胸腰椎骨折的临床效果。方法回顾性分析2018年3月至2021年12月诊断为胸腰椎骨折的老年患者98例的临床资料。根据手术入路的不同,将患者分为经皮组、Wiltse组和切开组,经皮组31例,其中男14例,女17例。平均年龄(69.3±6.6)岁;Wiltse组33例,男12例,女21例;平均年龄(68.7±7.1)岁;切开组34例,其中男16例,女18例,平均年龄(67.7±6.9)岁。比较3组患者的手术时间、术中出血量、术后引流量、透视次数、住院时间、Cobb′s角、伤椎椎体前缘高度、视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI)及相关并发症。结果3组术后伤椎前缘高度和Cobb′s角较术前均有明显改善(P<0.05),术后3组组间比较差异无统计学意义(P>0.05)。3组患者围手术期各项观察指标对比,经皮组的手术时间和透视次数比其他两组明显较多,差异有统计学意义(P<0.05);切开组术中出血量、住院时间与其他两组比较差异有统计学意义(P<0.05);3组间的术后引流量相互比较差异均有统计学意义(P<0.05)。3组患者术后VAS评分及ODI值较术前均降低(P<0.05),且经皮组及Wiltse组患者术后的VAS评分和ODI值均优于切开组患者(P<0.05)。切开组术后出现手术及基础疾病相关并发症较多,与其他两组比较差异有统计学意义(P<0.05)。结论治疗老年胸腰椎骨折,3种方法均可取得较好的临床效果,但经皮及Wiltse间隙微创入路相较于传统切开在软组织保护和术后功能康复方面更具优势,临床应用还需根据患者具体情况,采用合适的治疗方式才能够取得更好的疗效。