Simultaneously improving the flame retardancy and toughness of polylactic acid (PLA) remains a huge challenge. In this work, we report simple method for synthesizing PLA blended with biobased phosphorus-containing oligomeric lactates. Four lactates (PEL, PBL, PHL, POL) were synthesized l-lactic acid, aliphatic dihydric alcohols (ethylene glycol, butane-1,4-diol, 1,6-hexanediol, or 1,8-octanediol), phenyl phosphorodichloridate via esterification acylation reactions. Accordingly,...

The electrochemical performance is significantly influenced by the structure and surface morphology of electrode materials used in supercapacitors. Using floating catalytic chemical vapor deposition (FCCVD) technique, a self-supporting, flexible layer continuously reinforced carbon nanotube woven film (CNWF) was developed. Then, polyaniline (PANI) formed conductive network CNWF using cyclic voltammetry polymerization (CVEP) various aqueous electrolytes to produce series CNWF/PANI composite...

Abstract One of the key issues in creating a good reservoir model carbonate reservoirs is identification horizontal permeability conduits— "thief zones"— if any. In Sabriyah field Kuwait, dynamic measurements showed evidence thief zones Mauddud formation. Early water breakthrough has occurred some wells. Previous studies indicated that it was very challenging to detect thinly layered using conventional openhole logs. This paper describes methodology recognizing different types...

Abstract Most of the shale reservoirs in US land are naturally fractured. The fracture intensity and types vary from one to another. Even within same field, heterogeneity can be often expected high a horizontal well. current popular geometrical completion design potentially ignore existence natural fractures. Hence, maximizing stimulation efficiency without understanding existing fractures challenge. In this paper, study was made majority published case studies related shales last 20 years....

The main problem of manufacturing with traditional biodegradable plastics is that it more expensive than polymers derived from petroleum, and the application scope currently limited due to poor comprehensive performance. In this study, a novel poly(butylene adipic acid/terephthalate-co-glycolic acid) (PBATGA) copolyester 25-60% glycolic acid units was successfully synthesized by esterification polycondensation using cheap coal chemical byproduct methyl glycolate instead acid. structure...

Abstract Permeability is one of the major controls for production in fractured basement. It critical to be able identify and characterize permeable zones basement reservoirs not only evaluating well producing potential but also designing perforation, completion injection. Even though geoscientists reservoir engineers have made considerable effort over years better permeability profile basement, it still very challenging achieve this objective. This paper presents a newly developed approach...

At present, the development and usage of degradable plastics instead traditional is an effective way to solve pollution marine microplastics. Poly (butylene adipate-co-terephthalate) (PBAT) known as one most promising biodegradable materials. Nevertheless, degradation rate PBAT in water environment slow. In this work, we successfully prepared four kinds high molecular weight polyester copolyesters (PBATGA) via quaternary copolymerization. The results showed that intrinsic viscosity PBATGA...

Bio-based multi-functional additives can not only reduce the number of additive types, but also prevent damage caused by leaching during plastic product use. In this study, three bio-based flame-retardant plasticizers (PBL-1, PBL-3, and PBL-5) derived from l-lactic acid phosphorus-containing monomers with different valence states were synthesized two-steps. The effect on flame retardancy, mechanical properties, crystallization, optical transparency poly(lactic acid) (PLA) resin was...

Summary One of the key issues in creating a good reservoir model carbonate reservoirs is identifying horizontal permeability conduits—"thief zones"—if there are any. In Sabriyah field Kuwait, dynamic measurements showed evidence thief zones Lower Cretaceous (Albian) Mauddud formation. Early water breakthrough has occurred some wells. Previous studies indicated that it was very challenging to detect thinly layered using conventional openhole logs. This paper describes method recognizing...

Abstract One of the main challenges in fractured basement exploration and development is identification proper well targets with minimized drilling risk. The estimation fracture porosity permeability distribution reservoirs low matrix also very challenging as production relies mostly on complex network. proposed method aims at identifying potential flow-contributing fractures, modeling accurately density interwell space, finally, building a robust well-calibrated discrete network (DFN) that...

Biobased multifunctional plastic additives not only overcome the toxicity and non-degradability of phthalates but also endow multiple functions polymers. Herein, novel biodegradable oligomeric lactate flame-retardant plasticizers (PBCL) integrated from l-lactic acid crotonic with excellent fire-retardant plasticizing function were synthesized to inflammability fragileness polylactic (PLA). The results revealed that PBCL-plasticized PLA composites achieved good toughness-fire retardant...

The charge storage mechanism and capacity of supercapacitors completely depend on the electrochemical mechanical properties electrode materials. Herein, continuously reinforced carbon nanotube film (CNTF), as flexible support layer conductive skeleton, was prepared via floating catalytic chemical vapor deposition (FCCVD) method. Furthermore, a series novel self-supporting CNTF/polyaniline (PANI) nanocomposite materials were by cyclic voltammetry polymerization (CVEP), with aniline...

In this study, a novel three-dimensional reduced graphene oxide (NHGH-0.2) was synthesized via one-step hydrothermal treatment based on nitrogen doped and hydrogen peroxide etching. The preparation of NHGH-0.2 showed hierarchical holey structure with high specific surface area 874.9 m2/g, resulted from the synergistic effect N-doped chemical Electrochemical analysis ultrahigh capacitance 303.1 F/g at current density 1 A/g low charge transfer resistance, due to excellent wettability...

RFID technology is no stranger to more or less have contacted various of industries in nowadays. Premier wen Jiabao put forward the “experience China” 2009, after application IOT (Internet things) rocketed development and absolutely necessary as core IOT. On experiment background campus supermarket, this paper briefly introduces intelligent supermarket that mainly included four parts. Through analysis system, it detailed interpretation bring changes supermarket.

Abstract The continuously reinforced carbon nanotube woven film (CNWF) prepared via the floating catalytic chemical vapor deposition (FCCVD) was modified by mixed acid and vinyltrimethoxysilane (VTMS) respectively to obtain (CNWF@VTMS) grafted with CH 2 CH group. A series of novel self‐supporting composite electrode materials (CNWF@VTMS/PANI) for supercapacitors were then in‐situ oxidative polymerization aniline in presence CNWF@VTMS substrate as a conductive network framework. results...

Abstract Evaluating natural fractures in tight carbonate reservoirs during the exploration and early development stages is critical order to reduce geological uncertainty determine well trajectory future horizontal drilling. Challenges are often found both acquiring adequate data assessment of fractures/sub-seismic faults oil based mud borehole environment. This paper summarizes part experience learned from use an optimal dataset addition a workflow on fracture characterization for deep...