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Kapok was well-known for its oleophilic properties, but its mechanical properties and morphology impeded it from forming suitable absorbent materials. This study aims to demonstrate the process of creating an oil-absorbent web from a blend of treated kapok and polypropylene fibers.

Kapok fibers were separated from dried fruits, then the wax was removed with an HCl solution at different concentrations. The morphological and structural changes of these fibers were investigated using scanning electron microscopy images. The blending ratios of kapok and polypropylene fibers were 60/40, 70/30 and 80/20, respectively. The fiber blends were fed to a laboratory carding machine to form a web and then consolidated using the heat press technique. The absorption behavior of the formed web was evaluated regarding oil absorption capacity and oil retention capacity according to ASTM 726.

The results showed that the HCl concentration of 1.0% (wt%) gave the highest wax removal efficiency without damaging the kapok fibers. This study found that oil absorbency is influenced by the fiber blending ratio, web tensile strength and elongation, porosity, oil type and environmental conditions. The oil-absorbency of the web can be re-used for at least 20 cycles.

This study only looked at three types of oils: diesel, kerosene and vegetable oils.

When the problem of oil spills in rivers and seas is growing and causing serious environmental and economic consequences, using physical methods to recover oil spills is the most effective solution.

This research adds to the possibility of using kapok fiber in the form of a web of non-woven fabric for practical purposes.

In recent years, oil spill pollution has become one of the main problems of environmental pollution. Recovering oil by means of sorbent materials is a very promising approach and has acquired more attention due to its high cleanup efficiency. Compared to synthetic fibrous sorbents, the use of natural fibers in oil spill cleanups offers several advantages including environmental friendliness, degradable features and cost-effectiveness. Therefore, studies on developing sorbents using natural fibers for oil spill cleanup applications have become a research hotspot.

This paper reviews the work conducted by several researchers in developing oil sorbents from fibers such as cattail, nettle, cotton, milkweed, kapok, populous seed fiber and Metaplexis japonica fiber. Some featured critical parameters influencing the oil sorption capacity of fibrous substrates are discussed. Oil sorption capacity and reusability performance of various fibers are also discussed. Recent developments in oil spill cleanups and test methods for oil sorbents are briefly covered.

The main parameters influencing the oil sorption capacity of sorbents are fiber morphological structure, fiber density (g/cc), wax (%), hollowness (%) and water contact angle. An extensive literature review showed that oil sorption capacity is highest for Metaplexis japonica fiber followed by populous seed fiber, kapok, milkweed, cotton, nettle and cattail fiber. After use, the sorbents can be buried under soil or they can also be burned so that they can be vanished from the surface without causing environmental-related issues.

This review paper aims to summarize research studies conducted related to various natural fibers for oil spill cleanups, fiber structural characteristics influencing oil sorption and recent developments in oil spill cleanups. This work will inspire future researchers with various knowledge backgrounds, particularly, from a sustainability perspective.

The decrease in availability of mineral oils and their environmental hazards created the need to search for alternate bio-based oils. The aim of this study is to investigate the friction and wear characteristics of kapok (Ceiba pentandra) oil as a bio-lubricant.

The wear and friction characteristics between steel-steel contact under lubrication were found using a pin-on-disk tribometer under different loads and sliding speeds, respectively. The corrosion and oxidation stability of the test lubricants were also analyzed. The worn surfaces of the specimen are analyzed with the help of an optical microscope. The obtained results were compared with palm oil and mineral oil (SAE20W 40).

From the investigation, it is found that the kapok oil possess a lower coefficient of friction and wear rate than palm and mineral oil. It is also found that the coefficient of friction varies proportionally and the wear rate varies inversely with the sliding speed as expected.

The present results confirm that the kapok oil can be used as an alternative lubricant to reduce the demand for mineral-based oil lubricants.

In need of improving the properties of textiles, researchers investigate how to obtain surface with better mechanical and physical characteristics. On the other hand, for clothing purposes, it is also required to enhance comfortable properties. However, uniting these properties in the end product is difficult. For this objective, new fibers those allow what is desired are developed. This is one of the easiest ways. Because, if these characteristics can be found on the raw material, less treatments will be needed for gaining wanted surface quality. Another way is producing yarns that could enable end products with better mechanical, physical and comfortable properties. For these "new yarns", some of the production parameters can be changed or modified. As another way fibers can be blended, which is preferred in this study. The main aim is to evaluate the effect of kapok fibers on fabric properties. For this aim, kapok fibers were blended with three most common fibers: Tencel, PET and Cotton.

IN 1929 a subcommittee was formed, by the Aeronautical Research Committee, to investigate the subject of aircraft noise. Various aspects of the work have received attention, and the present paper is an attempt to summarise the general conclusions in a form suitable for the aircraft industry, without reference to the results of the investigations themselves.

The purpose of this monograph is to present the first English translation of a unique French colonial report on women living under colonial rule in West Africa.

The issue begins with a discussion of the contribution this report makes to the history of social development policy in Africa, and how it serves the on‐going critique of colonisation. This is followed by the English translation of the original report held in the National Archives of Senegal. The translation is accompanied by explanatory notes, translator’s comments, a glossary of African and technical terms, and a bibliography.

The discussion highlights contemporary social development policies and practices which featured in identical or similar forms in French colonial social policy.

As the report demonstrates, access to basic education and improving maternal/infant health care have dominated the social development agenda for women in sub‐Saharan Africa for over a century, and will continue to do so in the foreseeable future in the Millennium Development Goals which define the international community’s agenda for social development to 2015. The parallels between colonial and post‐colonial social policies in Africa raise questions about the philosophical and cultural foundations of contemporary social development policy in Africa and the direction policy is following in the 21st century.

Though the discussion adopts a consciously postcolonial perspective, the report that follows presents a consciously colonial view of the “Other”. Given the parallels identified here between contemporary and colonial policy‐making, this can only add to the value of the document in exploring the values that underpin contemporary social development practice.

The most widely recycled plastic in the world is recycled polyethylene terephthalate (rPET). To minimize the environmental related issues associated with synthetic fibers, several researchers have explored the potential use of recycled polyester fibers in developing various technical textile products. This study aims to develop needle-punched nonwoven fabrics from recycled polyester fibers and investigate its suitability in oil spill cleanup process.

According to Box and Behnken factorial design, 15 different needle-punched nonwoven fabrics from recycled polyester fibers were prepared by changing the parameters, namely, needle punch density, needle penetration depth and fabric areal weight. Several featured parameters such as oil sorption, oil retention, oil sorption kinetics, wettability and reusability performance were systematically elucidated.

The maximum oil sorption of recycled nonwoven polyester is found to be 24.85 g/g and 20.58 g/g for crude oil and vegetable oil, respectively. The oil retention is about 93%–96% in case of crude oil, whereas 87%–91% in case of vegetable oil. Recycled polyester nonwoven possesses good hydrophobic–oleophilic properties with static contact angle of 138° against water, whereas 0° against crude oil and vegetable oil. The reusability test results indicate that recycled polyester nonwoven fabric can be used several times because of its reusability features.

There is no detailed study on the oil sorption features of needle-punched nonwoven fabrics developed from recycled polyester fibers. This study is expected to help in developing fabrics for oil spill cleanups.

THE advantages which arise from the directness and speed of aircraft, and the high record for safety held by Air Lines like Imperial Airways, contribute to the increasing popularity of air travel. With many persons, however, the chief deterrent at present is understood to be the discomfort caused by the noise experienced, and there is no doubt that there are civil aircraft in use to‐day which are excessively noisy. Consequently attention has been directed recently in this and in other countries to suppressing the considerable noise to which passengers in aircraft cabins are usually subjected. The experiments are not yet completed, and it is not possible yet to answer all the questions that may arise. It is thought, however, that the following account of the trend of present results, as judged from recent work in the light of the writer's own experience, may be helpful in indicating the principles involved.

It is proposed in the near future to add the following sub‐paragraph to paragraph 64 of the Air Navigation Directions, 1936 (A.N.D.13):—

This paper aims to answer questions pertinent to whether or not services provided by smart hotels are really what customers are looking for, as well as to ascertain what are some unintended experiences guests may encounter. In essence, to the best of the authors’ knowledge, this research is the first in the field to acknowledge the paradox of smart service.

This inquiry adopts a qualitative approach with data-driven from online customer reviews and semistructured interviews. Thematic analysis was undertaken to interpret review comments.

Results point to a new phenomenon, which is coined as the smartness paradox. In particular, customers on one hand enjoy an array of smart-infused experiences that jointly offer patrons a sense of a futuristic lifestyle. On the other hand, smart devices superimpose a number of hindrances that bring guests dismay and annoyance.

This investigation brings smart service failure to the fore to highlight several key failure themes that could jeopardize the entire operation with debased customers’ satisfaction and loyalty inclination.

The smartness-paradox framework used in the present inquiry entails both approach and avoidance consequences customers enact depending on their smart experiences.