Iranian Polymer Journal最新文献

{"title":"A facile and green pre-dispersion method for the preparation of epoxide-functionalized natural rubber/silica nanocomposites with improved mechanical properties","authors":"Dalip Abdulraman,&nbsp;Tinnakorn Tiensing,&nbsp;Pranee Phinyocheep","doi":"10.1007/s13726-024-01335-4","DOIUrl":"10.1007/s13726-024-01335-4","url":null,"abstract":"<div><p>Good dispersion of silica filler in the rubber matrix is a key factor for the high-performance properties of rubber/silica nanocomposites. This work aimed at using mild and green conditions for incorporating high silica content in natural rubber (NR) without using a silane coupling agent. The NR latex was modified into a low degree (5%) of epoxide-functionalized NR, symbolized as ENR5 by epoxidation reaction. The silica (40 phr) was pre-dispersed in water using ultrasonication to break down the silica particles, symbolized as USiP before mixing in the obtained ENR5 latex. After water evaporation, no silica flocculation at the bottom of the container was observed, meaning that silica was well infiltrated in the rubber matrix without coagulating agents. The interaction of hydroxyl groups of silica with epoxide groups of ENR5 could support the stable dispersion of the silica in the rubber matrix. Then, the dried ENR5-USiP was further mixed with curing agents in a two-roll mill. The cure characteristic, morphology and mechanical properties of ENR5-USiP were compared with silica-filled NR using a conventional mixing process (NR-SiC) and NR filled with silica treated by a silane coupling agent (NR-SSiC). As a result, ENR5-USiP exhibited higher mechanical properties than NR-SiC and NR-SSiC. The SEM micrograph revealed the good dispersion of nano-size silica in the rubber matrix of ENR5-USiP composites. It can be highlighted that the breakage of silica particles by ultrasonication is a facile method and mixing of the obtained silica in the ENR5 latex is a green condition. Furthermore, the possible interaction between the silanol groups of silica and epoxide functional groups of ENR5 could play an important role in improving the mechanical properties of the silica-filled rubber composites without requiring a silane coupling agent.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 11","pages":"1553 - 1567"},"PeriodicalIF":2.4,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photothermal efficiency of carbon nanotubes-embedded polysulfone membranes for direct contact membrane distillation","authors":"Ahmed M. Hameed,&nbsp;AbdulAziz A. Alayyafi,&nbsp;Ahmad A. Alluhaybi,&nbsp;Mohamed S. Fahmi,&nbsp;Mohamed E. A. Ali","doi":"10.1007/s13726-024-01333-6","DOIUrl":"10.1007/s13726-024-01333-6","url":null,"abstract":"<div><p>Membrane distillation (MD) is a highly promising method for desalinating water with high salt content. However, a major challenge faced by this technology is its high energy consumption, which is caused by the need to heat up the saline feed solution. Hence, this study aimed to incorporate multi-walled carbon nanotubes (MWCNTs) into the polysulfone (PSF) matrix to fabricate composite photothermal MD membranes. These membranes have the capability to function independently without the need for an external energy source. Various quantities of MWCNTs ranging from 0.5 to 1.5% (by weight) were added to the PSF casting solution. This led to the creation of composite membranes with improved photothermal characteristics. The PSF and PSF/MWCNTs composite membranes were analyzed using scanning electron microscopy (SEM), FTIR spectroscopy, thermal gravimetric analysis, and contact angle measurements. The concentration of MWCNTs that yielded the highest photothermal efficiency was found to be 1% (by weight). The membranes were assessed using a photothermal membrane distillation (PMD) device, where the operational conditions and parameters were investigated. The presence of MWCNTs resulted in an increase in the surface temperature of the membrane to 67 °C when placed 10 cm away from a 200 W light source. In addition, the inclusion of MWCNTs led to a rise in the contact angle measurement from 80° to 112°, as well as an improvement in the liquid entry pressure (LEP) from 25.5 to 52 psi. Moreover, it significantly impacted the improvement of membrane production in the presence of light, while also exhibiting a high degree of operational efficiency.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 10","pages":"1369 - 1380"},"PeriodicalIF":2.4,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141197114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling transformative potential: recent advances in graphene-based polymer composites","authors":"Maziyar Sabet","doi":"10.1007/s13726-024-01337-2","DOIUrl":"10.1007/s13726-024-01337-2","url":null,"abstract":"<div><p>Graphene-polymer composites represent a burgeoning field within materials science, offering the potential to revolutionize various industrial applications by synergistically combining the exceptional properties of graphene with the versatility of polymers. This review transcends prior summaries by focusing on recent breakthroughs in dispersion techniques, a critical factor governing composite performance. We elucidate how advancements in dispersion control unlock a paradigm shift in functionalities like mechanical strength, electrical conductivity, and barrier properties. This targeted approach distinguishes this review from broader surveys. Furthermore, we explore novel preparation methods beyond established techniques like solution mixing and in situ polymerization, highlighting their role in achieving exceptional composite performance. The review critically examines emerging applications across diverse industries, showcasing how recent strides empower graphene–polymer composites to disrupt sectors like aerospace, automotive, electronics, and biomedicine. While acknowledging persistent challenges in cost, scalability, and environmental impact, the review emphasizes ongoing research efforts to overcome these hurdles. By providing a roadmap for future advancements, this work serves as a valuable resource for researchers, engineers, and innovators seeking to harness the transformative potential of graphene–polymer composites.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 11","pages":"1651 - 1665"},"PeriodicalIF":2.4,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141169555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carboxymethyl cellulose hydrogel for pH-responsive drug release of curcumin","authors":"D. K. S. Nishadani,&nbsp;Thennakoon M. Sampath Udeni Gunathilake,&nbsp;Yern Chee Ching,&nbsp;Hemanth Noothalapati","doi":"10.1007/s13726-024-01331-8","DOIUrl":"10.1007/s13726-024-01331-8","url":null,"abstract":"<div><p>This study outlines the development of a pH-sensitive hydrogel for hydrophobic drug delivery by cross-linking carboxymethyl cellulose (CMC) with varying fumaric acid (FA) concentrations (9%–26%). FTIR analysis of CMC–FA-26% hydrogel showed a prominent band at 1714 cm⁻¹, indicating the formation of ester bond. Compression tests demonstrated increased strength with cross-linking density changing from 9 to 26%. Stress–strain analysis revealed plastic deformation beyond 80% strain, with compression stress rising from 0.12 ± 0.1 to 1.9 ± 0.1 MPa as FA content increased from 9 to 26%. Thermogravimetric analysis revealed higher weight reduction (25–28%) for CMC–FA-26% compared to CMC–FA-9% (16–18%) during the fumaric acid weight loss stage. Scanning electron microscopic (SEM) examination showed that the hydrogels had a porous structure, crucial for their swelling, drug loading, and release. According to the swelling results, swellability was decreased by increasing cross-linking degree, and increased by increasing pH values. In the biodegradability test, the CMC–FA-26% hydrogel showed 35% weight loss after 28 days, while the CMC–FA-9% hydrogel exhibited a 54% weight loss. To improve the compatibility between hydrophilic CMC and hydrophobic curcumin (CUR)/β-cyclodextrin (β-CD) was incorporated to the hydrogel. The solubility results showed that with varying the molar ratio of CUR:β-CD from 1:1 to 1:3, the mean UV–Vis absorption changed from 0.005 to 1.048. The variation of the medium’s pH from 1.2 to 12 resulted in a notable increase in the cumulative curcumin release, ranging from 5.91 to 46.63%. Drug delivery results indicated excellent drug release in alkaline medium, highlighting the hydrogel’s potential for targeted drug delivery of hydrophobic drugs in the gastrointestinal tract.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 10","pages":"1449 - 1467"},"PeriodicalIF":2.4,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141119652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An experimental analysis on thermal performance of interloping threaded cooling channels in injection mold cavity","authors":"Prashant Paraye,&nbsp;R. M. Sarviya","doi":"10.1007/s13726-024-01329-2","DOIUrl":"10.1007/s13726-024-01329-2","url":null,"abstract":"<div><p>Injection molding is a mass manufacturing process, which facilitates the production of specially designed products in diverse shapes and sizes using various materials, serving industries from daily necessities to aerospace components. The cooling process in injection molding takes up a significant portion of an overall cycle time. In this study, a thermal analysis of conventional and threaded cooling channels in injection mold cavity was conducted using infrared thermal imaging. The experiments measured the temperature distributions in the mold cavity as they reached steady states during both heating and cooling phases. The temperature–time dynamics within the injection mold cavity revealed that the threaded design was significantly more efficient, heating up 23.4 s faster and cooling down 33.3 s quicker than the conventional cooling channel. Additionally, the threaded cooling channel maintained a more uniform temperature distribution of 1.64 °C lower than that in conventional cooling. The threaded configuration achieved peak temperatures 5.88% more rapidly and returned faster to near-ambient levels by 5.55%, highlighting its enhanced efficiency. Findings showed a higher quality of mold products and a reduction in cooling time, with the threaded cooling channel producing parts characterized by a high-gloss and refined surface finish. This enhanced performance of the threaded cooling channel could lead to significant energy savings and productivity gains in industrial applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 11","pages":"1539 - 1552"},"PeriodicalIF":2.4,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141123096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strong and tough conductive silk fibroin/poly(vinyl alcohol) composite hydrogel by a salting-in and salting-out synergistic effect","authors":"Honghui Ma,&nbsp;Yingxue Deng,&nbsp;Yubo Lin,&nbsp;Yu Zhang,&nbsp;Zhengxiong Zhou,&nbsp;Haoan Yu,&nbsp;Xiancai Jiang","doi":"10.1007/s13726-024-01334-5","DOIUrl":"10.1007/s13726-024-01334-5","url":null,"abstract":"<div><p>Hofmeister effect has been used to prepare highly tough and conductive hydrogel. However, it usually needs the complex steps of post-treatment of a pre-formed weak hydrogel by soaking in salt solution. Herein, strong and tough silk fibroin/poly(vinyl alcohol) (SF/PVA) ionic conductive hydrogel was prepared by a simple one-pot method by direct introduction of sodium citrate (Na₃Cit) into SF/PVA solution. It was found that Na₃Cit could not be directly introduced into SF/PVA solution due to its salting-out effect to prepare tough hydrogel. Fortunately, the salting-out effect of Na₃Cit could be weakened with the presence of calcium chloride (CaCl₂) and glycerol in SF/PVA solution. Finally, the strong and tough SF/PVA hydrogel was obtained by the one-time freezing/thawing process of SF/PVA/CaCl₂/Na₃Cit/glycerol solution. The tough SF/PVA/CaCl₂/Na₃Cit/glycerol organohydrogel with the tensile strength of 0.33 MPa and elongation-at-break of 540% were obtained. The SF/PVA/CaCl₂/Na₃Cit/glycerol organohydrogel with the excellent mechanical properties and ionic conductivity was used as the strain sensor. The SF/PVA/CaCl₂/Na₃Cit/glycerol organohydrogel sensor could detect various human motions with high sensitivity (GF = 6.87). The SF/PVA/CaCl₂/Na₃Cit/glycerol organo hydrogel strain sensor could generate reliable and reproducible electrical signals in response to various mechanical stimuli. We intend to present a simple and effective method to prepare high performance ionic hydrogel by Hofmeister effect.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 11","pages":"1527 - 1537"},"PeriodicalIF":2.4,"publicationDate":"2024-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexible production of three-dimensional biocomposite from cotton micro-dust waste and sand blend through a novel combination of molten salt hydrate and sodium L-glutamate salt","authors":"Vignesh Natarajan,&nbsp;Dali Naidu Arnepalli,&nbsp;Chandraraj Krishnan","doi":"10.1007/s13726-024-01322-9","DOIUrl":"10.1007/s13726-024-01322-9","url":null,"abstract":"<div><p>Cotton micro-dust (CMD) is a low-cost feedstock produced by cotton spinning mills. It consists of cellulose as the chief component, along with other non-cellulosic lignin and extractives. The two-stage pretreatment of CMD using alkali and acid facilitated cellulose enrichment and promoted favorable morphology for producing cellulose-based biomaterials. The process involves the solubilization of cellulose using an inexpensive and environmentally friendly zinc chloride solution for further conversion to biomaterials. The addition of novel cross-linker monosodium glutamate (MSG) at 5% (by weight) concentration facilitated the preparation of the polymer matrix at room temperature. The gelation process that transformed the liquid mixture into a solid polymer matrix depended on the shear-sensitive interaction between the Zn–CMD solution and the MSG. Further, the mix of CMD–ZnCl₂ and MSG was converted into a biocomposite by a reinforcement step with pit sand. The Zn–CMD–MSG acted as a binder for sand particles and formed a solid biocomposite. The complex association of sand with CMD conferred high thermal stability to the biocomposite. Moreover, the biocomposite showed good mechanical properties, with a tensile strength of 20 MPa and a flexural strength of 12 MPa. Hence, the present process is promising for developing a cellulose-based green composite from low-cost cotton waste and sand.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 9","pages":"1215 - 1229"},"PeriodicalIF":2.4,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141060369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of various geopolymerization parameters on poor quality Afşin-Elbistan fly ash-based geopolymer concretes with ground granulated blast furnace slag","authors":"Ahmet Hayrullah Sevinç,&nbsp;Muhammed Yasin Durgun","doi":"10.1007/s13726-024-01330-9","DOIUrl":"10.1007/s13726-024-01330-9","url":null,"abstract":"<div><p>The utilization of Afşin-Elbistan fly ash (FA), which cannot be used in cement and concrete industry in production of geopolymers, has been studied with some preliminary trials. In this study, FA of Afşin-Elbistan thermal power plant, which does not fit any of FA classes according to ASTM C 618, was used as a geopolymer binder raw material. The main motivation of the study is to investigate the partial usability of this type of FA, which is not sufficient on its own and creates a large amount of waste, as a geopolymer raw material. FA was replaced with ground granulated blast furnace slag (GGBFS) by the ratios of 25% and 50% (by weights) in order to develop the properties of geopolymer concrete. Sodium silicate (SS) and sodium hydroxide (SH) (10 and 14 M) were used as activators. Three different activator to binder ratios (0.45, 0.55 and 0.65) and three SS/SH ratios (0.75, 1.0 and 1.5) were chosen. Unit weight, compressive strength, splitting tensile strength, and ultrasonic pulse velocity tests were performed for 28 and 60 days. In order to investigate the microstructure, scanning electron microscopy (SEM) analyses were performed. As a result, GGBFS incorporation enhanced the properties of Afşin-Elbistan FA-based geopolymer concrete. With the increase of GGBFS content, the compressive strength values increased. The highest strengths were obtained from 50% GGBFS groups. The results revealed that Afşin-Elbistan FA (AEFA), which has the highest waste reserve among the thermal power plant fly ashes in Turkey, could be evaluated as partial geopolymer raw material.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 10","pages":"1435 - 1448"},"PeriodicalIF":2.4,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13726-024-01330-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140962601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient adsorption of heavy metal ions chromium (III) by modified corn starch/GO composite aerogel","authors":"Dequan Wei,&nbsp;Shenghua Lv,&nbsp;Shanshan Zhang,&nbsp;Jingjing Zuo,&nbsp;Shan Liang,&nbsp;Juhui Yang,&nbsp;Jialin Wang","doi":"10.1007/s13726-024-01326-5","DOIUrl":"10.1007/s13726-024-01326-5","url":null,"abstract":"<div><p>Starch is a natural polymer containing a large number of active hydroxyl groups, which make it an ideal material for preparation of adsorption functional aerogels. In this work, a modified carboxymethyl corn starch/organic glass composite aerogel (CMSHA-GO) was successfully prepared using starch as raw material and hexamethylenediamine as cross-linking agent. It showed significant adsorption properties for heavy metal ions. When the composite aerogel was introduced with 10 mg GO, the adsorption capacity of CMSHA-GO₁₀ aerogel for heavy metal ions was in the order of Cr³⁺ &gt; Ni²⁺ &gt; Cu²⁺ &gt; Cr(VI) &gt; Pb²⁺, while its adsorption performance for heavy metal ion Cr³⁺ was mainly discussed. The structures and morphologies of the composite aerogels were characterized by FTIR, XRD, and SEM techniques. The results showed that the CMSHA-GO composite aerogel has a stable three-dimensional mesh-like porous structure with good conditions for metal ion adsorption. In addition, the effects of different GO contents, pH values, and time conditions on the adsorption of metal ions by the CMSHA-GO composite aerogel were discussed. When the weight ratio of carboxymethyl starch: hexanediamine: GO was 10:0.1:0.1, the CMSHA-GO₁₀ composite aerogel showed the best adsorption performance for Cr³⁺ ions. The adsorption equilibrium was reached within 3 h at an initial Cr³⁺ concentration of 500 mg·L⁻¹, with a maximum equilibrium adsorption capacity (<i>q</i>_e^cale) of 212.7 mg/g.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 10","pages":"1469 - 1480"},"PeriodicalIF":2.4,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140963246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flame retardant polyvinyl alcohol composite with excellent comprehensive properties prepared using Cu2O/chitosan and phosphorus-based flame retardants","authors":"Wenzong Xu,&nbsp;Yi Zhang,&nbsp;Julan Liu,&nbsp;Ziyi Xuan,&nbsp;Lulu Su,&nbsp;Maotong Zhao","doi":"10.1007/s13726-024-01327-4","DOIUrl":"10.1007/s13726-024-01327-4","url":null,"abstract":"<div><p>Polyvinyl alcohol (PVA) has good film-forming and barrier properties and can be used as packaging and biomedical materials, etc. However, PVA burns easily and is prone to melt dropping, limiting its wider application. In this study, Cu₂O/Cs was prepared by coating chitosan (Cs) on the surface of cuprous oxide (Cu₂O), and mixed with ammonium polyphosphate (APP) and phytic acid (PA) to prepare PVA composites. The results showed that the limiting oxygen index (LOI) value of the PVA composite with 8% (by weight) APP and 2% (by weight) Cu₂O/Cs as flame retardants was 30.6%, which was 50.7% higher than that of pure PVA. Compared with pure PVA, its composite peak heat release rate (pHRR) was significantly reduced by 81.1%, and its total heat release rate (THR) was also markedly reduced by 67.7%, while its time to ignition (TTI) was increased by 41 s. The main reasons were that the gas generated by APP decomposition during heating reduced the concentration of combustible gas, the generated phosphorus-containing substances promoted the dehydration and carbonization of PVA, and Cu₂O and chitosan (Cs) improved the compactness of the carbon layer. In particular, the incorporation of Cu₂O/Cs improved the mechanical properties of our PVA composites compared with those containing only APP and PA. In short, the combination of Cu₂O/Cs and phosphorus-based flame retardants improved the flame retardant performance of PVA at low additions while taking into account the mechanical properties. This is expected to expand the range of applications of PVA.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":601,"journal":{"name":"Iranian Polymer Journal","volume":"33 10","pages":"1381 - 1394"},"PeriodicalIF":2.4,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}