Photochemical and thermal stability of degradable PE/paper waste composites obtained by extrusion

Abstract

The low-density polyethylene (PE)/waste paper composites with different components ratio were prepared by extrusion. The photochemical stability of these samples and crystallinity degree of PE in blends were studied using ATR-FTIR spectroscopy. The thermal properties of composites were estimated by thermogravimetric analysis. Moreover, the morphological changes were observed by SEM. It was found that after long-term exposure to UV (100 h) composites undergo more efficient photo-oxidative degradation when compared with pure PE. Also the thermal stability of composites obtained is lower than that in PE. The results indicate that such a material is characterized by high susceptibility to environmental decomposition.

Maleic anhydride grafted linear low‐density polyethylene/waste paper powder composites with superior mechanical behavior

“…The emergence of these new bands is related to the occurrence of ester functional groups formed by the reaction between surface OH groups of cellulose present in WPP and anhydride group of maleated LLDPE (Figure ). Similar type of observation for the ester bond formation between OH groups of various natural fibers and maleic anhydride grafted polymers have been explained in the literature . 0, The highly intense and sharp spectral band at 3442 cm −1 (Figure ) indicates a strong H‐bonding formed between the hydrogen atom of OH group on WPP and oxygen atom of grafted maleic anhydride (Figure ) .…”

“…Similar type of observation for the ester bond formation between AOH groups of various natural fibers and maleic anhydride grafted polymers have been explained in the literature. 4,280,43 The highly intense and sharp spectral band at 3442 cm 21 ( Figure 5) indicates a strong Hbonding formed between the hydrogen atom of AOH group on WPP and oxygen atom of grafted maleic anhydride ( Figure 7). 19,40 Furthermore, the characteristics bands associated with cellulose at 890 cm 21 disappeared from the spectrum of LLDPE-g-MA/WPP composite ( Figure 5).…”

“…In the quest of regulating the waste management and sustainability, production of polymer composites with the inclusion of various waste materials as filler is conceptually a modest and often cost‐effective tactics. The strategic usage of waste materials for preparing new polymeric composite materials can reduce the amount of actual polymer usage and hence can be a logical step toward the reduction of plastic waste . Importantly, the use of greener waste feedstock such as cellulose rich materials has engrossed much awareness due to social development factors and new government policies …”

“…The strategic usage of waste materials for preparing new polymeric composite materials can reduce the amount of actual polymer usage and hence can be a logical step toward the reduction of plastic waste. [2][3][4][5] Importantly, the use of greener waste feedstock such as cellulose rich materials has engrossed much awareness due to social development factors and new government policies. 5 The paper is one such waste material that is most widely used, abundant, biodegradable and ecofriendly.…”

Avaliação do efeito de um óleo parafínico sobre o comportamento físico-químico de tubulações de polietileno de alta densidade

“…elevadas causadas pela exposição ao Sol, bem como, também, pela presença de tensões mecânicas (aplicadas externamente ou tensões residuais do processo de conformação) [11][12][13] . A difusão de um líquido em uma matriz polimérica causa, preferencialmente, um envelhecimento físico.…”